100 books like The Defining Decade

By Meg Jay,

Here are 100 books that The Defining Decade fans have personally recommended if you like The Defining Decade. Shepherd is a community of 11,000+ authors and super readers sharing their favorite books with the world.

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Book cover of Adulting: How to Become a Grown-up in 468 Easy(ish) Steps

Randy J. Paterson Author Of How to Be Miserable in Your Twenties: 40 Strategies to Fail at Adulting

From my list on building adulthood in your twenties.

Why am I passionate about this?

I have been conducting psychotherapy for over 30 years, much of it with young people navigating the tricky path between dependent adolescence and independent adulthood. I’ve seen the downsides of stasis and stagnation, and the tremendous benefits of learning to stand and take the tiller of one’s own life. Many of my goals in writing, vlogging, and doing therapy involve helping young adults steer their way around the potholes in the paths they aspire to tread. More broadly, I have worked on various fronts to “give psychology away,” as instructed during my training, making psychological and life-management knowledge as open and as easily accessed as possible. I operate one of Vancouver’s largest psychotherapy services and provide training to clinicians across Canada in effective mental health interventions for mood- and anxiety-related concerns.

Randy's book list on building adulthood in your twenties

Randy J. Paterson Why did Randy love this book?

Adulthood seems like a necessary and possibly desirable life stage, but HOW exactly does one do it? What are the essentials? Brown steps away from cheerleading and the examination of deep psychological concepts, and instead focusses on the actual skills you need in order to be a tolerably functional, reasonably independent adult. From how to roast a chicken, to coping with upsells at the lube shop, to responding to dinner invitations, she inventories the things every grownup should (and often doesn’t) know.

By Kelly Williams Brown,

Why should I read it?

2 authors picked Adulting as one of their favorite books, and they share why you should read it.

What is this book about?

From breaking up with frenemies to fixing your toilet, this way fun comprehensive handbook is the answer for aspiring grown-ups of all ages.

If you graduated from college but still feel like a student . . . if you wear a business suit to job interviews but pajamas to the grocery store . . . if you have your own apartment but no idea how to cook or clean . . . it's OK. But it doesn't have to be this way.

Just because you don't feel like an adult doesn't mean you can't act like one. And it all…


Book cover of Stumbling on Happiness

Victor Haghani Author Of The Missing Billionaires: A Guide to Better Financial Decisions

From my list on intelligent financial decision-making in less than 200 pages.

Why am I passionate about this?

I have over four decades of experience working and innovating in the financial markets and have been a prolific contributor to academic and practitioner finance literature. I started my career at Salomon Brothers in 1984, where I became a managing director in the bond-arbitrage group, and in 1993 I was a co-founding partner of the hedge fund Long-Term Capital Management. I founded Elm Wealth in 2011 to help clients, including my own family, manage and preserve their wealth with a thoughtful, research-based, and cost-effective approach that covers not just investment management but also broader decisions about wealth and finances.

Victor's book list on intelligent financial decision-making in less than 200 pages

Victor Haghani Why did Victor love this book?

Harvard psychologist Daniel Gilbert uses wit and science to reveal how we generally fail to predict what makes us happy and how we can do better.

I loved his discussions of why lottery winners aren't happier for long, how our memories create a "rosy past" illusion, and even why bad experiences can sometimes be better than good ones.

I loved the engaging stories and insightful experiments that Gilbert uses to dismantle common assumptions about happiness and offers fresh perspectives. I gained self-awareness and discovered unexpected paths to finding and savoring happiness.

Strap in for a thought-provoking journey that may just change how you view your own happiness and that of others-all with a healthy dose of humor.

By Daniel Gilbert,

Why should I read it?

10 authors picked Stumbling on Happiness as one of their favorite books, and they share why you should read it.

What is this book about?

Bringing to life scientific research in psychology, cognitive neuroscience, philosophy, and behavioral economics, this bestselling book reveals what scientists have discovered about the uniquely human ability to imagine the future, and about our capacity to predict how much we will like it when we get there. 

• Why are lovers quicker to forgive their partners for infidelity than for leaving dirty dishes in the sink?

• Why will sighted people pay more to avoid going blind than blind people will pay to regain their sight?

• Why do dining companions insist on ordering different meals instead of getting what they…


Book cover of Slouching Toward Adulthood: Observations from the Not-So-Empty Nest

Randy J. Paterson Author Of How to Be Miserable in Your Twenties: 40 Strategies to Fail at Adulting

From my list on building adulthood in your twenties.

Why am I passionate about this?

I have been conducting psychotherapy for over 30 years, much of it with young people navigating the tricky path between dependent adolescence and independent adulthood. I’ve seen the downsides of stasis and stagnation, and the tremendous benefits of learning to stand and take the tiller of one’s own life. Many of my goals in writing, vlogging, and doing therapy involve helping young adults steer their way around the potholes in the paths they aspire to tread. More broadly, I have worked on various fronts to “give psychology away,” as instructed during my training, making psychological and life-management knowledge as open and as easily accessed as possible. I operate one of Vancouver’s largest psychotherapy services and provide training to clinicians across Canada in effective mental health interventions for mood- and anxiety-related concerns.

Randy's book list on building adulthood in your twenties

Randy J. Paterson Why did Randy love this book?

The cultivation of independent adulthood is a tricky dance - usually at least part of the time conducted with parents. It helps to see the other side of the fence, and Koslow describes the emotional journey of parents as they gradually disengage from their role as captain of the ship of a young adult’s life. Whether they know it or not, you are almost certainly the biggest and most lasting project of their entire lives, and standing on the sidelines to watch it sink or swim ain’t easy.

By Sally Koslow,

Why should I read it?

1 author picked Slouching Toward Adulthood as one of their favorite books, and they share why you should read it.

What is this book about?

A witty and insightful report from the parenting trenches by the mother of two "adultescents"

Millions of American parents sit down to dinner every night, wondering why fully grown children are joining them—or, more likely, grunting good-bye as they head out for another night of who knows what. Sally Koslow, a journalist, novelist, and mother of two "adultescents" digs deep to reveal what lies behind the current generation’s unwillingness—or inability—to take flight.

By delving into the latest research and conducting probing interviews with both frustrated parents and their frustrated offspring, Koslow uses humor, insight, and honest self-reflection to give voice…


Book cover of The Marshmallow Test: Why Self-Control Is the Engine of Success

Nicola Morgan Author Of Blame My Brain: Amazing Teenage Brain

From my list on to help you and your teen understand their mind.

Why am I passionate about this?

I'm known as the Teenage Brain Woman but, frankly, any brain will do! I'm so interested in that 1.5kg lump of stuff between our ears that I've spent 25 years studying it, taking in neuroscience, psychology, and counseling. As a child, I was fascinated by how things work. I took things to pieces and (sometimes) put them back together. If you know how something works you can make it work better and mend it when it doesn’t. Human brains are just things. The more we understand our own, the better we can make it work. My life now involves sharing that understanding with anyone who’ll listen. Our brains are in our hands.

Nicola's book list on to help you and your teen understand their mind

Nicola Morgan Why did Nicola love this book?

If you’ve ever heard that the “marshmallow research” shows that the ability to delay gratification aged 3 determines your life success and skills later, this book will put you right! It is far more positive, interesting and practical than that and you need to read the whole book, not just the headlines. There are techniques you can put into practice to improve your (and your family’s) habits in relation to pretty much anything. I use it to help develop healthy screen-time behaviours – for myself, too! And I refer to it regularly when giving talks and training to teachers and parents.  

By Walter Mischel,

Why should I read it?

3 authors picked The Marshmallow Test as one of their favorite books, and they share why you should read it.

What is this book about?

A child is presented with a marshmallow and given a choice: Eat this one now, or wait and enjoy two later. What will she do? And what are the implications for her behaviour later in life?

Walter Mischel's now iconic 'marshmallow test,' one of the most famous experiments in the history of psychology, proved that the ability to delay gratification is critical to living a successful and fulfilling life: self-control not only predicts higher marks in school, better social and cognitive functioning, and a greater sense of self-worth; it also helps us manage stress, pursue goals more effectively, and cope…


Book cover of No Rules: A Memoir

Rita Dragonette Author Of The Fourteenth of September

From my list on the Vietnam War era by women writers.

Why am I passionate about this?

I’ve always been fascinated by the role of women in war: men may be on the front lines, but women deal with its impact and often struggle to have equal standing. I was inspired by stories told by my mother who was a nurse in World War II and participated in surgery under gunfire and helped liberate a POW camp in Germany. Yet, no one wanted to hear from her because she was “just a nurse.” Fast forward to Vietnam where women were still being marginalized. I wrote The Fourteenth of September to even the playing field by telling a story that was largely based upon my own experience in college during l969-1970.

Rita's book list on the Vietnam War era by women writers

Rita Dragonette Why did Rita love this book?

When a girl is stuck between generations in the early days of feminism:

A classic coming-of-age memoir of the early ‘70s, where a 16-year-old who thinks she has it all figured out, hits the road. She is forced to learn fast as she encounters dropouts, draft dodgers, and communal living, all the while running up against the sexism that masqueraded as freedom and love as she discovers by trial and error, the liberated woman she wants to be.

By Sharon Dukett,

Why should I read it?

1 author picked No Rules as one of their favorite books, and they share why you should read it.

What is this book about?

In this coming-of-age memoir, Sharon takes you with her on a nail-biting adventure through the early 1970s after leaving her sheltered home life at sixteen years old to join the hippies. Yearning for freedom, she lands in an adult world for which she is unprepared, and must learn quickly in order to survive.

As Sharon navigates the US and Canada-whether by hitchhiking, bicycle, or the back of a motorcycle-she experiences love and heartbreak, discovers whom she can and cannot trust, and awakens to the growing women's liberation movement while living in a rural off-grid commune. In this colorful memoir, she…


Book cover of Do Cool Sh*t: Quit Your Day Job, Start Your Own Business, and Live Happily Ever After

Koyaki Author Of You Are Ketchup: And Other Fly Music Industry Tales

From my list on helping parents feel better about you being a musician.

Why am I passionate about this?

I’m a Grammy-nominated musician and creative who actually loves music, not as a vocation but as a cathartic practice and art form. Because I love music and the process of creating I also understood that no matter how much I love music that the love of it had nothing to do with the business of selling music. If I wanted to maintain the love I had to learn the business and find a way to continue to cherish the art while familiarizing myself with the business of art. I found peace and a deeper understanding of where I stood in the business and understanding that helps to keep the artist sane.

Koyaki's book list on helping parents feel better about you being a musician

Koyaki Why did Koyaki love this book?

A great guide to starting over, Do Cool Sh*t resonated with me so much while I was working a 9-5, touring, and being a multi-hyphenate at the same time. This book is about shedding the idea of what is “practical” while embracing the concepts of taking chances, failing, learning, failing some more, and understanding that all of these steps are necessary to convert dreams into realities. It’s a personal journey to being content, not complacent, understanding that sometimes it’s leaping off the edge, both feet at the same damn time. 

By Miki Agrawal,

Why should I read it?

1 author picked Do Cool Sh*t as one of their favorite books, and they share why you should read it.

What is this book about?

Miki Agrawal opened Slice Perfect, her first farm-to-table pizzeria in New York City with zero experience and no capital. Since then she has watched her business grow exponentially, including a partnership with Zappos.com founder and bestselling author Tony Hsieh with whom she is opening her dream restaurant, Slice: Las Vegas. She's also become become an angel investor for other promising start-ups. In Do Cool Sh*t, she shares her own adventures in entrepreneurship, offering solid, easy-to-follow advice aspiring entrepreneurs can use to start their own business, fund it on a shoestring budget, convene the perfect brain trust to brainstorm a business…


Book cover of Filthy Animals

Sue Mell Author Of A New Day: Stories

From my list on short story love, loss, and starting over.

Why am I passionate about this?

Growing up in an intellectual household with a New Yorker subscription, I became a fan of the short story early on, with J.D. Salinger, Ann Beattie, and Raymond Carver forming a baseline of personal taste and inspiration. I especially love stories that resonate with my own sense of yearning for life and love—and the deep losses that inevitably come our way. Decades of reading would pass before I began writing stories myself, and I’m thrilled to have a chance to recommend these moving and beautifully written collections.

Sue's book list on short story love, loss, and starting over

Sue Mell Why did Sue love this book?

I’m a big fan of stories about people striving for creative expression and the ups and downs that accompany that path, even better when that desire is tangled up in and complicated by love—or picking oneself up after catastrophe.

I was deeply moved by the emotional richness and psychological complexity that Taylor achieves. I read this book when it first came out in 2021, but I still sometimes think about the love triangle that carries across some of these linked stories between a graduate student in mathematics and a pair of dancers in an open relationship.

By Brandon Taylor,

Why should I read it?

2 authors picked Filthy Animals as one of their favorite books, and they share why you should read it.

What is this book about?

INSTANT NATIONAL BESTSELLER 

WINNER OF THE STORY PRIZE

SHORTLISTED FOR THE DYLAN THOMAS PRIZE

NAMED A BEST BOOK OF THE YEAR BY USA TODAY, NPR, VULTURE, MARIE CLAIRE, THE TIMES OF LONDON, GOOD HOUSEKEEPING, AND PUBLISHERS WEEKLY

A group portrait of young adults enmeshed in desire and violence, a hotly charged, deeply satisfying new work of fiction from the author of Booker Prize finalist Real Life

In the series of linked stories at the heart of Filthy Animals, set among young creatives in the American Midwest, a young man treads delicate emotional waters as he navigates a series of sexually…


Book cover of An Ordinary Age: Finding Your Way in a World That Expects Exceptional

Meg Jay Author Of The Defining Decade: Why Your Twenties Matter--And How to Make the Most of Them Now

From my list on figuring out your 20s.

Why am I passionate about this?

Meg Jay, PhD, is a Clinical Psychologist, and an Associate Professor of Human Development at the University of Virginia, who specializes in adult development and in twentysomethings in particular. She earned a doctorate in clinical psychology, and in gender studies, from the University of California, Berkeley. Her books have been translated into more than a dozen languages and her work has appeared in the New York Times, Wall Street Journal, Harvard Business Review and on NPR and BBC. Her TED talk “Why 30 Is Not the New 20” is among the most watched of all time.

Meg's book list on figuring out your 20s

Meg Jay Why did Meg love this book?

An Ordinary Age is an antidote. It is for twentysomethings everywhere who are sick and tired of being sick and tired that the lives they wake up to everyday don't match the ones they see on Instagram. It is a book for real twentysomethings, that is, ones who deserve to know that their lives and their efforts aren't just good enough: They are well and truly good.

By Rainesford Stauffer,

Why should I read it?

1 author picked An Ordinary Age as one of their favorite books, and they share why you should read it.

What is this book about?

Best Book of 2021 —Esquire?

Featured on Good Morning America

"A meticulous cartography of how outer forces shape young people’s inner lives." —Esquire, Best Books of 2021 

In conversation with young adults and experts alike, journalist Rainesford Stauffer explores how the incessant pursuit of a “best life” has put extraordinary pressure on young adults today, across our personal and professional lives—and how ordinary, meaningful experiences may instead be the foundation of a fulfilled and contented life.

Young adulthood: the time of our lives when, theoretically, anything can happen, and the pressure is on to make sure everything does. Social media…


Book cover of Mentalligence

Sandy Graham Author Of You Speak For Me Now

From my list on to influence human society.

Why am I passionate about this?

Over the past decade, I’ve become very concerned with the direction authoritarianism is taking human society. It’s a global problem that now infects America, leaving us with a partisan divide we may not be able to bridge. My recommended books helped me understand the situation and how one might speak out against this negative force effectively. Convinced that bombarding readers with facts alone is useless, I chose to provide a novel that is interesting and captivates readers. My goal is to entice readers to press on to the end regardless of their political persuasion, in hopes that along the way some thought will be devoted to the issues raised.

Sandy's book list on to influence human society

Sandy Graham Why did Sandy love this book?

Mentaligence takes conscious mind development one step further. It suggests that we are burdened with an indoctrination dictating how to behave and meet preordained goals pressed upon us by parents, teachers, religious leaders, and society in general. Its premise is that we must recognize these factors and any negative effect on our well-being; learn how to throw off their shackles; and develop a new attitude of thinking. In short, acquire what Dr. Lee calls mental agility.

Indoctrination, group-think, and social brain-washing are related terms for the negative force. While some indoctrination may be considered beneficial, few would disagree with the negative effect of Nazi group-think or that leading to mass suicides in Jamestown. They illustrate the need for objective thinking to all manifestations of indoctrination.

By Dr. Kristen Lee PhD,

Why should I read it?

1 author picked Mentalligence as one of their favorite books, and they share why you should read it.

What is this book about?

One of the greatest gifts we can give to ourselves is rethinking what we've been taught, because thoughts become behaviors. The same mind that gets us stuck is the same one that can set us free. It's time to rip up the script society hands us, breathe deep, and reclaim a healthy definition of success that doesn't compartmentalize your mind, body and soul. We need a new organizing framework that allows more flexibility and moral grounding one that lets science, emotion and spirit to fuse. Too often, life's disorienting moments can leave us tumbling into messy, downward spirals. We lose…


Book cover of The How of Happiness: A New Approach to Getting the Life You Want

Chris West Author Of The Karpman Drama Triangle Explained: A Guide for Coaches, Managers, Trainers, Therapists – and Everybody Else

From my list on really helpful psychology.

Why am I passionate about this?

I have always been fascinated by human behaviour since going to a school where we were told there was a right and a wrong way to do everything. That never felt right to me – human beings are much bigger than that! I studied Counselling and Therapy at Norwich City College in the 1990s and later specific courses on Transactional Analysis. Many years on, I am still learning…

Chris' book list on really helpful psychology

Chris West Why did Chris love this book?

This book is based on the science of Positive Psychology, not just helpful tips from someone nice.

Since 1980, lots of serious research has been done on what behaviours and mindsets really make people happy – and the results are all here, in this clear, well-presented book. I dip back into this book regularly.

By Sonja Lyubomirsky,

Why should I read it?

4 authors picked The How of Happiness as one of their favorite books, and they share why you should read it.

What is this book about?

The key tenet of THE HOW OF HAPPINESS is that every human being has a happiness 'set point' which, depending on how high or low it is, can determine how positive or negative they feel. This book offers a practical approach to help readers increase their set point, and find a level of happiness above that which they would normally feel, and feel more satisfaction in life.

Based on scientific research and trials, this is a groundbreaking book that offers a practical plan to enable readers to achieve a more positive outlook at home, at work and in their personal…


5 book lists we think you will like!

Interested in self-actualization, psychology, and ageing?

Self-Actualization 227 books
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