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. This book 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.