I don't focus on what I'm up against. I focus on my goals and I try to ignore the rest.

So what if you fail? At least you'll know what not to do when you try again.

I always like to win. But I'm the big sister. I want to make sure she has everything, even if I don't have anything. It's hard. I love her too much. That's what counts.

Just believe in yourself. Even if you don't, pretend that you do and, at some point, you will.

I guess some kids around me had to grow up quickly, had all those problems. But I wasn't one of those kids, or around those kids, not at all.

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.

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