Having twin girls is a life changer - that's for sure. But I like getting up and changing diapers. It's the things you do.

You've never seen me dance, have you?

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.

I used to get nervous, you know if my parents would come watch. And then I would get nervous if my friends came and watched. Today it's not a problem anymore actually, because now I enjoy it. I see that they, you know, respect me immensely, and I try to put on a good show and show that I can still play very good tennis.

I'm as patient a father as I am on the tennis court. It takes a lot for me to get really upset, but sometimes kids can get you really cross if they really keep bugging you.

I'm not angry. As an athlete ... you should be open to criticism, and you're allowed to be criticized, because not everybody has the same opinion, not everybody likes the same players. The rankings are quite volatile: Today you're 'great,' tomorrow you're 'not,' but then you're 'great' again. It makes for great stories. Now, I always look at the long term and by doing that, obviously, I can stay calm through the storm.

I have to fit holidays around tournaments, particularly the grand slams, in Melbourne, Paris, London and New York.