NachoNatto rated The Defining Decade: Why Your Twenties Matter--And How to Make the Most of Them Now: 5 stars Sept. 5, 2016 Public Meg Jay: The Defining Decade: Why Your Twenties Matter--And How to Make the Most of Them Now (2013, Twelve)The Defining Decade: Why Your Twenties Matter--And How to Make the Most of Them Now by Meg Jay