I can improve it a little bit. But it's my head, it's the way I am. So at the end of the day, I will be who I am and I will win how much I can win.

I've lived my life the way I wanted to, whether scaling the mountains, partying long into the night or having fun playing soccer.

I've realized I can't waste any moment being unhappy.

But normally when you talk to yourself [on court] you say; 'I love you, you're a good guy, but don't miss next time, okay.'

It's too much pressure. You have to think match by match and moment by moment or it drives you to distraction. I'm tired of all the talk about it. Everyone is obsessed with it...If I was the type of person who had tennis, tennis, tennis all the time and I went to bed and ended up dreaming about tennis, I would go nuts.

There is no such thing as a perfect player; it doesn't exist.

One of the most important things, actually, when you're playing on grass, is to move.