When I'm playing my best, like I was at the U.S. Open, I feel on top of the match and able to do exactly what I want. There are other times when you're not in control, but that is tennis and you have momentum changes in every single match.
It's always hard to find the best friends in the locker room because we are all competing against each other - but the real friends you are going to definitely find off the court because we are competitors in between.
I played football in high school, I played baseball when I was younger, things like that, but I think it was the passion I had for track where you want to do an individual sport and be the best, I think - there's nothing that can replace that.
I let my racket do the talking. That's what I am all about, really. I just go out and win tennis matches.
If Davis Cup was a little bit less or once every two years, I would be more inclined to play. But the way it is now, it is too much tennis for me.
Where I fall down is my short game. I don't practice enough, and when I have to take a half swing from 50 yards out, that's trouble.
I can't just wake up and watch TV and do nothing. I need a day off working out, seeing the wife, play a little golf, see my kids.
I'm as patient a father as I am on the tennis court. It takes a lot for me to get really upset, but sometimes kids can get you really cross if they really keep bugging you.
I've done so many interviews over the years in so many different languages. Radios. Papers. Magazines. There's always another interview to do. It's quite something, I have to say.
I always had the dream that, once I became No 1 in the world, that if I had a child I hoped I would have it early enough so the child can see me playing.
Maybe, one other match better; but if you look at the tournament as a whole, I played very high quality tennis for seven matches and raised my game when I needed to.
But, then again, I had to stop because there was too much pain or too much trouble. After I retired I still had one more elbow surgery just to be able to do normal things.
But the problem with coaching is that it is a full-time job. By that I mean for at least 40 weeks in a year you have to be with the player, either travelling or training. Right now I don't want to do that.
But in 2000, the injuries really started to kick in and my elbow gave a lot of problems. At the end of the year I had to take 20 months off before I could come back into the game.
For me, and most of the other players, too, if you had to pick one of the four Grand Slams, you would pick Wimbledon. It's got tradition, it's got atmosphere, and it's got mystique.
I had a lot of different thoughts and ideas and always to transform, but I'm trying certain things that I feel my heart is really going for and that was one of the things that I initiated a few months ago.
A lot of people run a race to see who is fastest. I run to see who has the most guts, who can punish himself into exhausting pace, and then at the end, punish himself even more.
I think I can win a slam. That's my main goal, and if I could choose one, then yes, it would have to be Wimbledon. But, honestly, I would take any one of them.
When the headache persisted, I checked myself into an emergency room. When the doctor used the term 'brain tumour', I feared the worst. My whole world shrank around me.
I have to use other things to help my tennis, like my brain. But I believe that, even when your muscles are not so fast, with the brain and with concentration you can compensate.
Maybe something is wrong with me, but I just think I'm normal. I'm not super-skinny but I'm not super-fat. But I don't really care about what other people say.
