I want the same thing I've wanted since I was 7 years old. I want to be No. 1.

What I learned as a young child continues to have a tremendous impact on my life today.

Coaches are very important to players. They're people that are mentors, people that are advising them, people that should be their friends and somebody you can rely on on the tour.

The fact that nobody played tennis in my family and you'd say by chance they make three tennis courts in front of the restaurant that my family owned when I was 4, I think that's a destiny. That's kind of life circumstances that kind of come together for you to become who you want to become.

I haven't been in tennis for that long, but what I can say is that we have a lot of young guys at the top who are willing to do a lot of good things for tennis in general.

We spent all day travelling, living away from the people you love, not sleep in our own bed ... We are far from our own houses. We live in hotels, clubs. And now that I am a father it is much more difficult.

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.