I'm an athlete. I go out there and fight my heart out.

I don't have to follow any special diet or count calories. I try to eat healthily and before a match I load up on pasta and salads. But I pretty much do what I want.

I love getting consumer reports. I think it's one of my favourite things, studying what people have to say about the product and then trying to make it better.

I never think about the numbers. I've never played tennis for the money, because as long as I enjoy it, and I can achieve anything, then the money will come. I know that things will start coming up, many more people will want to start getting involved. But I just want to keep my head cool, and I want to leave (business) to the people who take care of business. I just go out and I just play tennis.

I want my tennis to speak for everything.

If I'm nervous, it means I had to work hard to get there, whether it's playing in a tournament or speaking at an event. So I try to stop and be proud of getting to live in that moment.

I had so many outs in my career. I could have said, I don’t need this. I have money; I have fame; I have victories; I have Grand Slams. But when your love for something is bigger than all those things, you continue to keep getting up in the morning when it’s freezing outside, when you know that it can be the most difficult day, when nothing is working, when you feel like the belief sometimes isn’t there from the outside world, and you seem so small. But you can achieve great things when you don’t listen to all those things.