We've entered an age in which people have no idea how old they are. Fifty-year-olds lament, "I still feel 30 in my mind"—and sometimes dress like it. Some 30-year-olds may cling to the destructive habits of their twenties, but plenty more march dutifully into full-on family-and-career–building mode, perhaps acting older than they need to. Now that people are living and staying healthier so much longer, our self-invention can go on seemingly forever. The bad news is we're perpetually in between, and sometimes it's hard... More >>>