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.

People ask me where I get my fighting qualities from, and I have to say Serena.

In my mind, I'm always the best. If I walk out on the court (and) I think the next person is better, I've already lost.

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

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

In the sports arena I would say there is nothing like training and preparation. You have to train your mind as much as your body.

I have to say accounting almost killed me.