I don't think, that you can always - you can ever - get your game to perfection, you know. Only if you're Federer.
I always try to have something that keeps my mind relaxed, keeps my mind a little bit off tennis.
In my case, I can sincerely say nothing is impossible.
Joking around is part of my personality, just who I am.
I've had my ups and downs in my private life.
I had a unique privilege to have a good start in life and a chance to develop my talents.