For me, I'm in the driver's seat; I'm No. 1 in the world. I've won the last couple of meetings, and I've won the big tournaments lately. Whoever comes, I'll try to beat him. But it's almost up to me to decide who's my rival, isn't it?

Once you reach a good level in tennis it fills you with a lot of motivation. I hope I can do it for a long time.

I have two lives, and all the problems I might have, I feel like I drop them once I step on to the match court.

Tennis can be a very frustrating sport. There is no way around the hard work. Embrace it. You have to put in the hours because there is always something you can improve. [Y]ou have to put in a lot of sacrifice and effort for sometimes little reward but you have to know that, if you put in the right effort, the reward will come.

I am thinking more and more about what I want to and can do after my days as an active athlete. Thoughts like family and marriage also cross my mind more and more often.

I'm not the kind of guy who wakes up angry.

Clearly, when you win everything, it's fun. That doesn't necessarily mean you love the game more.