I would not want to change any of the important things. I love my family. I have loved my career. I look back fondly on my education. I stand by the important choices I made in my life.
I do remember missing out on the Microsoft IPO by an eighth of a point. Perhaps if I had a life do-over, I might raise my bid price allowing me to get in on Microsoft from the start...then, I wouldn't be as nervous about the economy as I am right now.