I have learnt to be even more patient.

It doesn't need to be the same every day, doesn't need to be the same shower I use, the same restaurant I go to, the same hour I go to sleep. I've always been very flexible. I don't care if I practice at nine in the morning or 10 P.M.

I definitely feel there's room for improvement.

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.

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?

I hope so. God, I've practiced so much that I you don't want to be worse five years later. I feel I have a great game today. I know how hard it is to pull off those great shots, and I know how easy it is to miss, so I'm more aware of these things. But I'm so happy I'm at the age I am right now because I had such a great run and I know there's still more possible.

To handle that stardom, the red carpets, the photo shoots, people all of a sudden recognizing you and following you in everyday life, it's a bit weird. It's strange, and it can have funny effects on you in terms of do you like it or don't you like it. Some people run away from it, some people embrace it; I found a good middle ground.