For me, I relish playing tournaments in America.
That's the most fulfilling thing I've experienced ever, being a father.
Practicing hard doesn't guarantee you anything.
Being able to travel with family and friends so they can cheer me on as I play is something it's hard to put a price on; my point is simply that for all of this, there is indeed a price.
People often come up and tell me how much money I make in a year, which is funny because I don't think it's something I've ever said to someone.
I've played with Prince racquets my entire career.
The way I see it, the prize money is a reflection of my on-court performance, but the sponsorships are something more personal, connected more to people and fans, and to my values.
A lot of players have had it worse than me. Look at a guy like Andy Roddick, incredible Hall of Fame player, but he ran up against Roger so many times in big finals.
Probably the most infamous story in our family: My oldest brother took a U-lock bike lock and locked my head to the bedpost. And he didn't just do this for a minute or two; he did this for a couple hours. I was maybe 8 or 9, and he was maybe 15.
A big upper body is not a great thing for tennis, and for me, flexibility is important.
When I left college, I just thought I could play tennis to delay getting a regular job and go there and try to make ends meet. But it's been a very different experience for me, fortunately.
Tennis is not really a traditional Olympic sport.
The coaches that I have have done an incredible job with me, obviously the stuff we work on on the court.