In order to stay where I am - and I want to do that - I have to stay dedicated as well as I have been before I became No. 1.

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 tried to win. I was as competitive as I am today.

I had a nice childhood. War and all the experiences affected me as a person and helped me to grow, to change.

I'm a happy man, because I am successful in what I do, of course; but what makes me most happy is I have people around me that I love and who love me back. This, for me, is the most important thing. Nobody likes to be alone.

I try to enjoy what I do, and every moment of the life that I have is a blessing. What else can you do but to be happy and try to bring that joy to the other people around - especially in the tournaments. Everybody has bad days. I'm not always funny or laughing.

We have a harder way to succeed in life as Serbs because of the past that we had and because of the history we had.