I always think it's best to pretend you're in a tenuous position. Just as a player, you always want to stay in the now and work hard but also have goals for the future. There's no promises in any entrepreneurial business. You have to really work hard every year and also try to envision where you want to go in the future at the same time.

I always listen, I ask children, I even ask adults in tennis, "What are your children playing?" And most of the time it's not tennis. It's pathetic.

The trouble with being number one in the world - in anything- is that it takes a certain mentality to attain that position, and that is something of a driving, perfectionist attitude, so that once you do achieve number one, you don't relax and enjoy it.

I would love to be a player today. I had the right personality for it.

It's just really important that we start celebrating our differences. Let's start tolerating first, but then we need to celebrate our differences.

When people tell you not to believe in your dreams, and they say “Why?”, say “Why not?

I think self-awareness is probably the most important thing towards being a champion.