I believe the brain is like a muscle - like any other it can be improved.

People may say I developed an iron will, but what really happened is that I made myself much fitter. I think an iron will is always supported by fitness.

I'm certainly not sorry that there were some things I missed. You may think you're missing something at that time but later when you look at it, you didn't miss anything.

If you become great, then you can become happy. If you're happy first, it's much more difficult to be great.

I just travel all the time.

But it's very difficult, I can tell you I played the Czech Open a few times and it's very difficult just to go on to a scene where the course is prepared differently when the greens are fast and he's not used to it and they're hard as a rock and he's not used to it.

If you go to school and practice for five days a week, it still gives you two days you can go and see your friends, you can go to the movies, you do whatever you like to do.