For me, the past 20 years have been practice for tomorrow. Someone who's successful in any area has figured out at least two things: how to get the most out of themselves, and that attention to detail matters. Having a career that lasted that long in my sport explains the sort of personality that you have to have. You have to treat it as a marathon. You have to treat it as building blocks. My wife, Steffi, and I just launched a real estate development company, and we're building an all-seasons resort outside Boise, Idaho. And we've been involved in everything from room layouts to the art on the walls to the furniture fabrics. It's down to every detail.

You have to understand who you are and figure out a way to communicate it. It might be in a different industry, but it's about what pumps the blood through your veins, what makes you excited, what pushes your buttons. And then discovering the best way to communicate that, no matter how big or small; it's what you stand for, what you believe in, and what reflects who you are.