Have you ever felt like you didn't belong, or were just "faking it until you make it"? Maybe you were promoted at work, or won a prize, something you felt absolutely certain that you didn't deserve. We've all been there, and some of the most high-achieving of us feel it more than others. Will Smith confessed on a talk show that he wakes up in the middle of the night with anxiety. I've known independently wealthy people who need to have enough money for an entire year in their bank account, when someone else feels financially confident with a monthly paycheck.