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You are always talking about yourself and tennis and how you are feeling. I try to avoid it when I don't have to.

To stay interested in tennis, I have to mix it up with other things.

Tennis is all about mental toughness, and you have to keep your head in the game. I make time to relax away from competition pressures, travel and intense training schedules to make sure I'm looking after myself. Taking time out with family and friends helps to maintain the work-life balance everyone needs.

Tennis is my life, obviously; I need to focus, I need to win. But it's not the only thing. I'm not going to play forever.

I play golf, but sometimes it's so un-relaxing, I have to play tennis to wind down. Now that I think about it, this process is sort of like when I go out for sushi and have to get a slice of pizza afterward.

I let my racket do the talking. That's what I am all about, really. I just go out and win tennis matches.

I just try to stay positive and focused on the tennis, not let anything get to me, like crazy questions. But I'm tough, let me tell you, tough as nails.

With everything else that would swirl around me when I got involved in it, tennis was my main concern.

Tennis is an individual sport, and I am quite a self-conscious person.