I am there to play tennis and represent the U.S., but I'm also aware that not everyone's going to be able to think that way.

The airplane has had a big impact on my life.

What separates the winners from the losers is that they can deal with doing their best while still coming up short.

The dumber you are on court, the better you're going to play.

When I turned professional, what I was really aiming for was to be in the top 100, try to hold the top 100 for ten years, and just be in the show, and have a nice career. It's more than I could have ever hoped for. I worked awfully hard for it, but there are other people who worked just as hard and didn't get the breaks. I recognized that I've been lucky and being able to live this life that I wanted since a young age. I really went after it with everything that I have and somehow it worked out.

Many books have been written about what the X-factor is, what separates people who win big matches versus those who struggle. Some of it's innate, but there's a piece of it that's learned, embracing those moments.

It does take a great hunger to be successful at anything.