Tennis court, the results, yes, it gives me a feeling of accomplishment and knowing that all the work I put in is working. It's a great feeling. But happiness is something way bigger than tennis.

I want to have my son be proud of me. I want to give him a good example that if you have a goal, and you have a dream, you can achieve it if you work hard.

There are so many steps you have to go through to reach a high level, so you're kind of building your own, I would say, mountain. You have to go piece by piece by piece. When you're young and really ambitious, you want to jump right up. It kind of teaches you a lesson, I would say.

I want to maximize my potential. And when I talk about that, don't get me wrong - I'm not talking about just making money.

I know if I react, and I want to get mad, and emotions come to the surface, I think quickly of my friends who have died and how they overcame their struggle and used their cancer and their lives for the betterment of mankind, and it sets me back in place.

I have two main reasons for retiring. The first is I can no longer play at a level I was accustomed to in the past. That has been very, very frustrating to me throughout this past year. The second one is realizing my health, along with my family, is the most important thing in the world.

Maybe now, instead of being afraid and saying, 'Look how hard Terry tried, and he still got cancer,' instead people will say, 'Look at the effort he put in, and he died of cancer. We're really going to have to try hard in order to beat it - harder than we ever have before.'

I want to know if I look up a whole lot of books about some form of cancer that that's not going to get to my insurance company and I'm going to find my insurance premium is going to go up by 5% because they've figured I'm looking at those books.