It was very unusual for a boy to play tennis in my country.
Mostly the problems when I was down were caused by myself. There were times when I was not responsible enough or decisive enough.
I had a unique privilege to have a good start in life and a chance to develop my talents.
I'm trying not to pay too much attention to the rankings because calculations can distract you.
I cannot guarantee anything.
Tennis is my life, obviously; I need to focus, I need to win. But it's not the only thing. I'm not going to play forever.
My nutritionist has done a great job in changing my diet after we established I am allergic to things like gluten - I can't eat pizza, pasta and bread. I have lost some weight, but my movement is sharper and I feel great.
The tradition in Serbia has always been team sports - football, basketball, handball, volleyball and water polo, individual sports are not supported.
In terms of playing ability there is nothing to choose between number one and 100. Instead, it's a question of who believes and who wants it more? Which player is mentally stronger? Which player is going to fight the hardest in the big points? These are the things that determine who is the champion.
I have been through two wars in my 24 years, and I know what it's like to be without anything, to see the bombs flying above your head.
I'm trying to enjoy my lie as much as I can and I know that tennis hopefully is going to be my life the next 10, 15 years.
Not everybody can like what I do, and if you feel that somebody is coming up closer to you and starting the rivalry and everything, you maybe change your position to him.
I like my groundstrokes, I can say. I like it. That's my game - I'm a groundstroke player and I play pretty aggressive.
My mother is a special story. She went through so much to bring us up, four men at home, especially when our country was going through really difficult times.
I am very skinny.
Tennis players we're always playing in center courts that feel like arenas. And when we get on the court and the crowd cheers your name or salutes you - it's like you're a gladiator in the arena. And everyone is cheering - and you're fighting, you're screaming, during your strokes - it feels like you're an animal, fighting for your life.
The history of our country is cruel. We have to face those issues or, should I say, we had to. Not anymore I hope, because we are going in the right direction, and we are ready to forgive, ready to move on.
My grandfather went through a lot in his life.
It's always easier if you have the support of your family, if you're not alone. I came from a country that has been through a lot of troubles in the last 20 to 30 years, but we have been through them together.
My father had never watched tennis, never liked tennis too much. He said, 'OK, we buy a racket, we watch together,' because we didn't know anything. It was a process of learning together that made it more interesting.
