--- product_id: 1702306 title: "The Defining Decade: Why Your Twenties Matter--And How to Make the Most of Them Now" price: "€ 36.83" currency: EUR in_stock: false reviews_count: 9 url: https://www.desertcart.pt/products/1702306-the-defining-decade-why-your-twenties-matter-and-how-to store_origin: PT region: Portugal --- # 4.7/5 from 10,920 reviews Used book in good condition Top #11 in Developmental Psychology The Defining Decade: Why Your Twenties Matter--And How to Make the Most of Them Now **Price:** € 36.83 **Availability:** ❌ Out of Stock ## Summary > πŸ“– Own your decade, own your destiny! ## Quick Answers - **What is this?** The Defining Decade: Why Your Twenties Matter--And How to Make the Most of Them Now - **How much does it cost?** € 36.83 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/1702306-the-defining-decade-why-your-twenties-matter-and-how-to) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Trusted by Thousands:** 4.7-star rating from over 10,000 readers means you’re in great company - β€’ **Mental Clarity on Demand:** Your go-to resource for navigating confusion and gaining peace in your 20s - β€’ **Proven Bestseller Status:** Ranked top #11 in Popular Developmental Psychology for instant credibility - β€’ **Perfect for Shared Growth:** Ideal for parent-child bonding and meaningful weekly conversations - β€’ **Unlock Your Twenties' Potential:** A must-read guide to mastering your defining decade ## Overview The Defining Decade by Meg Jay is a highly acclaimed, bestselling book that emphasizes why your twenties are crucial for personal and professional growth. With a 4.7-star rating from over 10,000 readers and a top ranking in developmental psychology, this used copy in good condition offers invaluable insights to help millennials gain clarity, motivation, and actionable strategies to make the most of their formative years. ## Description The Defining Decade: Why Your Twenties Matter-And How to Make the Most of Them Now [Jay, Meg] on desertcart.com. *FREE* shipping on qualifying offers. The Defining Decade: Why Your Twenties Matter-And How to Make the Most of Them Now Review: A wonderful way to support someone by helping them choose and focus on their future. - Excellent read for parent and child. The best way to utilize this insightful book is to buy two copies. As a parent I read it first. Then I was able to motivate my granddaughter and I handed her a copy. We agreed on a weekly schedule to have a conversation over a meal. The schedule could slide to meet individual needs. In this day and age it is valuable addition for development. Review: Must Read! Finished within 2 Weeks - I’m a 26F and I loved this book. I decided this year I will get back into reading since it was something I enjoyed when I was a kid. I saw the title and I knew this would be a great first book to start with. It will now be my new holy grail when life starts to overwhelm me or have confusion and in need of some deep clarity. I wish I found this book sooner when I first entered my 20s. However, I’m thankful that I found it now. Within these last 2 weeks it has helped me gain so much unexpected mental clarity and peace with my 20s. It’s a must read!! ## Technical Specifications | Specification | Value | |---------------|-------| | Best Sellers Rank | #128,435 in Books ( See Top 100 in Books ) #12 in Popular Developmental Psychology #41 in Success Self-Help #1,486 in Personal Transformation Self-Help | | Customer Reviews | 4.7 4.7 out of 5 stars (10,940) | | Dimensions | 5.5 x 0.85 x 8.2 inches | | Edition | Reprint | | ISBN-10 | 0446561754 | | ISBN-13 | 978-0446561754 | | Item Weight | 8.3 ounces | | Language | English | | Print length | 272 pages | | Publication date | April 2, 2013 | | Publisher | Twelve | ## Images ![The Defining Decade: Why Your Twenties Matter--And How to Make the Most of Them Now - Image 1](https://m.media-amazon.com/images/I/812pT1QRzUL.jpg) ![The Defining Decade: Why Your Twenties Matter--And How to Make the Most of Them Now - Image 2](https://m.media-amazon.com/images/I/51RZf+GnqcL.jpg) ## Available Options This product comes in different **Format** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ A wonderful way to support someone by helping them choose and focus on their future. *by J***R on September 2, 2025* Excellent read for parent and child. The best way to utilize this insightful book is to buy two copies. As a parent I read it first. Then I was able to motivate my granddaughter and I handed her a copy. We agreed on a weekly schedule to have a conversation over a meal. The schedule could slide to meet individual needs. In this day and age it is valuable addition for development. ### ⭐⭐⭐⭐⭐ Must Read! Finished within 2 Weeks *by A***Y on January 26, 2026* I’m a 26F and I loved this book. I decided this year I will get back into reading since it was something I enjoyed when I was a kid. I saw the title and I knew this would be a great first book to start with. It will now be my new holy grail when life starts to overwhelm me or have confusion and in need of some deep clarity. I wish I found this book sooner when I first entered my 20s. However, I’m thankful that I found it now. Within these last 2 weeks it has helped me gain so much unexpected mental clarity and peace with my 20s. It’s a must read!! ### ⭐⭐⭐⭐⭐ A 25 year old's Review: This is a Paradigm Shifting Book Anyone 17+ Should Read *by P***K on April 18, 2012* I read Dr. Meg Jay's NY Times piece on co-habituation (...) which lead me to ordering her book. I received it yesterday and read it in one sitting. So, I think it's pretty good. As a twenty something, I would recommend this book to my friends and even those still in high school. Dr. Jay teaches lessons about how to ideally approach one's twenties and why it really matters. She interweaves research, stories, and counseling sessions with her patients to make a thought provoking but easy book to read. In many of those patients, I saw my friends or myself. There was the twenty something coffee barista still waiting for the right opportunity to come by. There was the beautiful and successful, girl chronically hooking up and never dating because she's still plagued with teenager, self-image problems. There was the bicycle shop guy wanting to be original and afraid of settling down. What they all have in common is this intense desire to know, "Am I going to make it? And what the hell should I be doing in my twenties? School was so easy, but life is so hard." This book isn't a step by step guide. It won't go into how to systematically meet guys/girls, get over depression, or how to do well on an interview. There are plenty of books on getting into the details. Instead, this is a thought provoking book aimed against the popular twenty something zeitgeist today that, "we can do anything", "there's always time", and "I have until 30 to get my life together." Not to mention the million other stories we tell ourselves like, "I'm never going to get good at this", "It's better to wait rather than choose", or "Everyone on Facebook is doing better than me." In a sense, this book is like "Rich Dad, Poor Dad" to personal finance. They are paradigm shifting books that sweep away the false assumptions and beliefs we acquired from our childhood and culture and replace them with solid, real principles on how reality works. This book isn't going to do the heavy lifting for you, only you can do that. This book is the starting point to begin living one's twenties with drive, clarity, and purpose. The book itself is divided into three sections: Work, Love, and The Brain and the Body. Work talks about increasing your identity capital, the value of "weak ties", that you know what you want even though you think you don't, the unhelpful prevalence of Facebook comparisons, and seeing a career as the first step in a unique, customized life versus settling down. Love goes into the importance of taking dating seriously in your 20s, compatibility with possible in-laws, how to make sure "living together" isn't harmful, and choosing the right partner. The Brain and Body is sort of a misc. collection of pieces centered on how your brain, body, and mind works. The Brain and Body section also covered a lot of neuroscience research I wasn't aware of. For example, your brain undergoes a radical period of reconfiguration in your 20s which means now is the best opportunity for learning skills. Or, the frontal cortex that controls a lot of our mature responses such as regulating emotions is still developing for most people in their 20s. Besides the physical brain, Dr. Jay also talks about the mind such as learning how to calm yourself down, how to develop confidence (rather than believing it's fixed), and that you can radically alter how you feel by changing parts of your life. It also has a very frank chapter on fertility and that ladies don't have as much time as they think to have children. The final chapter before the epilogue talks about mapping your years to see how limited your time truly is. It seems common for many young people to talk about getting their career in order or going to graduate school eventually, getting married, and having kids but not all at the same time. Except, when you're 25 or 27 saying this, you're quickly running out of time. It's hard to convey in a review how good the book is. This is the book I wish I could have written in ten years. Not just because of the advice, but because of the patient interviews. I found myself agreeing and sharing the same POV as the patient many times but through the counseling session, it was almost like I was sitting there and seeing my own assumptions fall apart and seeing the truth for what it really is. This book doesn't knock you over the head with what Dr. Jay thinks is right but begins from where you already are and lets you see for yourself the problems in your logic. Just as any good psychologist does. This isn't your run of the mill advice book. There's a lot of popular myths and assumptions that this book dispels with cold, hard truth. I'm a self-help addict, and there was plenty of new information I never heard or thought of before. The underlying message in all the stories and chapters is start living your life now. Take responsibility. Don't believe the lies that your twenties don't matter or that confidence is only innate. For most people, the late night parties, pointless jobs, and random hookups won't be what build your identity, what you care about or remember in the future. If anything, as Billy in the book says, you will probably feel betrayed that you wasted the best years of your life doing all the meaningless things that culture and others mislead you to believe most important. So, start preparing now because the investments (or lack thereof) that you do in your twenties will have the greatest impact in your career, marriage, and overall happiness. As she ends the book, "The future isn't written in the stars. There are no guarantees. So claim your adulthood. Be intentional. Get to work. Pick your family. Do the math. Make your own certainty. Don't be defined by what you didn't know or didn't do. You are deciding your life right now." ## Frequently Bought Together - The Defining Decade: Why Your Twenties Matter--And How to Make the Most of Them Now - Atomic Habits: An Easy & Proven Way to Build Good Habits & Break Bad Ones - Workbook: The Defining Decade by Meg Jay: 45 exercises for Thriving in Your Twenties: Implement, Connect, and Ignite Your Path to Success --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/1702306-the-defining-decade-why-your-twenties-matter-and-how-to](https://www.desertcart.pt/products/1702306-the-defining-decade-why-your-twenties-matter-and-how-to) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-11-01*