You have to do things right to stay in business, and that's not easy, and that's a choice on a daily basis, the choices you make in how to run your business and how to have a point of differentiation and how to be true to your brand, how to offer something that people want and to offer something that you love.
Unfortunately the world is what it is now. People don't get along for whatever reason. As professional athletes, in a way we're almost ambassadors for peace, because sports brings everyone together.
You have to let fear go. Another lesson is you just have to believe in yourself; you just have to. There's no way around it. No matter how things are stacked against you, you just have to every time.
Tennis is mostly mental. Of course, you must have a lot of physical skill, but you can't play tennis well and not be a good thinker. You win or lose the match before you even go out there.
Some people say I have attitude - maybe I do... but I think you have to. You have to believe in yourself when no one else does - that makes you a winner right there.
The thing about tennis is if you stay off for two weeks, or just for three days, you can lose your rhythm quickly. So it's just a question of constant diligence and vigilance.
I have been recently diagnosed with Sjogren's Syndrome, an autoimmune disease which is an ongoing medical condition that affects my energy level and causes fatigue and joint pain.
