Of course, I want to be number one. But being happy and healthy is the most important thing.

Interior design is a business of trust.

Tennis is mostly mental. Of course, you must have a lot of physical skill, but you can't play tennis well and not be a good thinker. You win or lose the match before you even go out there.

Every Olympics is something special. If you're fortunate enough to play for your country - there's just so much energy. It's truly amazing.

I truly believe that whoever feels the most confident is usually the one to win.

I think there's more stressful periods than others when you're launching new things or going into a new business, or there are many things that can stress you out. Having to let people go, that's stressful. Never fun. But for the most part, I try to manage a schedule that's achievable and try not to make a schedule that's not. And a lot of times, sometimes it becomes a little unmanageable, but in spurts. So I think being able to make an achievable schedule, one that I know I can accomplish.

Serena and I have done some great career planning, and we're playing really at the peak of our tennis right now. I think tennis has been a sport where people play this insane schedule from 14 years old, so of course at 26, it's over. We've really paced ourselves.