“The Defining Decade: Why Your Twenties Matter And How to Make the Most of Them Now”

Our “thirty-is-the-new-twenty” culture tells us that the twentysomething years don’t matter. Some say they are an extended adolescence. Others call them an emerging adulthood. But thirty is not the new twenty. Meg Jay argues that twentysomethings have been caught in a swirl of hype and misinformation, much of which has trivialized what is actually the most transformative period of our adult lives.

Drawing on more than ten years of work with hundreds of twentysomething clients and students, Jay weaves the latest science of the twentysomething years with behind-closed-doors stories from twentysomethings themselves. The result is a provocative read that provides the tools necessary to make the most of your twenties, and shows how work, relationships, personality, social networks, identity, and even the brain can change more during this decade than any other time in adulthood—if we use this time wisely.

The Defining Decade has sold more than 200,000 copies, and inspired one of the most-watched TED talks to date–“Why 30 Is Not the New 20”—with nearly six million views in the first year alone.