Joel Peterson, chairman of JetBlue Airways, has spent a career leading teams, building businesses, and managing people at every level. Along the way, he's learned valuable lessons about the best ways to bring on new talent \u2013 as well as when and how to let people go. He also teaches at the Stanford Graduate School of Business and is the author of the book \u201cEntrepreneurial Leadership: The Art of Launching New Ventures, Inspiring Others, and Running Stuff.\u201d