By Kim Reed Perell, a widely recognized entrepreneur, angel investor and CEO of Amobee

At one point almost all of us have thought, “I wish I had known then what I know now.” Think about it: What do you know now that you wish you had known five, 10, or even 20 years ago?

Retrospective self-analysis is a helpful exercise that encourages you to focus on how you have changed and what those changes mean for your career. It’s easy to forget where you started, but examining your younger self can help identify which of your behaviors have outlived their usefulness.