Last weekend, I attended my 10-year Stanford University reunion. It was an opportunity to look back on those formative years, reconnect with old friends, and reflect on the lessons learned.10 lessons from 10-year college reunion: (1) The Medici Effect is real; (2) Your daily habits show up on your face after 10 years; (3) Insecurity tells, confidence shows; (4) Plans are great, but life will generally laugh at them; (5) Fighting the Zebra Effect is hard (but worth it); (6) Identity is the real thing we're searching for; (7) Freedom is rare, but incredibly apparent; (8) We get more embarrassing with age (or we're just mature enough to embrace it); (9) Shared struggle builds unbreakable bonds; (10) Life is much more fragile than you think.