The day I'm not improving will be the day I hang up the racket.

You can never get complacent because a loss is always around the corner.

Life is challenging but I'm always up for a challenge.

I contribute my best in my sport and I also have a ton of respect for myself and my family.

If you look at me, I'm very tall but I'm not huge or muscular. I tend to be slim and you know, I actually can lose weight quicker than I can gain it.

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.

Just know what's inside your food.

Everything is tennis for me, it's my career and it's entertainment, but it's also a business.

Of course I want to look well and fit - and as an athlete, I want to look strong.

Win pretty, win ugly, just win.

I do expect a lot from myself, but it's also a balance of being... positive and also pushing yourself.

I think I've been fortunate to be at the top of the game and in the media for years, and a lot of times, people want to be your friend when you're on the top. You know, there have been times when I've been injured and I never got a phone call. So that's the way it is.

Of course, I want to be number one. But being happy and healthy is the most important thing.

I don't have time to be negative.

I try to invest smart. I'm not a baller. I'm not a blinger.

That's what you feel as an athlete. Pretty much our job is to make the impossible happen every day. It's like magic, you know. I like that.

Equality for men and women, across the world, not only in sports, is the goal. We obviously have a long way to go, but every little bit helps.

A lot of times, I don't just do juice; I do the whole thing blended to keep the fiber.

No TV, no acting for me. I'm kind of a more behind-the-scenes kind of woman even though what I do is very public. I'm really low-key and I don't need to be the center of attention.

I love design.

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.

I like to be busy. It's not always easy because the schedule gets busy; especially, the more successful you are, the more demands you have. But it's definitely worth the sacrifice.

Sometimes when you're making more errors you want to pull back, but I just need to keep going forward.

I've always found the rain very calming.

I eat lots of vegetables and green juices.

Early in the morning, it's super tough for me to eat right away, but I still need energy for practice. I try to start out with a protein smoothie, a green juice, or some sort of fruit.

I'm always on the court with my dad.

I don't focus on what I'm up against. I focus on my goals and I try to ignore the rest.

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.

For years I felt that I didn't have enough stamina and then, four years ago, I felt like I was not getting enough air but I was diagnosed with exercise-induced asthma. The medicine for asthma never worked.

When you're on top, you're on top.

Retiring is the easy way out.

I have a lot of good role models in my family for things off the court - like my older sister, who's a lawyer. I don't like writing papers, but she's helped me a lot. It's nice to have an art and business background because they tie together perfectly.

If I don't go to the gym for a week, I just get thinner and thinner.

When you lose, you're more motivated. When you win, you fail to see your mistakes and probably no one can tell you anything.

If I didn't play tennis I don't know where I'd be.

After working so hard on the court, I find that snacks help me avoid late-afternoon energy lows.

You have to believe in yourself when no one else does – that makes you a winner right there.

All those lessons that I've learned on the court, I have applied them to my life outside of the court in business, my company, called V Starr interiors, an interior design company, and EleVen, which I wear on court.

No matter who you are, the grass is never greener on the other side.

I think there's a connection with what you wear. If you don't feel good about what you're wearing, you aren't going to feel confident, and you aren't going to be able to concentrate.

I have always said that after sport, I wanted a life, I wanted an opportunity, I wanted to be able to do something. And if something happens - the economy falls out or the dollar is worthless, anything could happen - you have to be ready to work. And I'm ready.

You have to prove that you know what you're doing. You have to have longevity. You have to stay around.

To stay interested in tennis, I have to mix it up with other things.

I knew my destiny was to be in the winner's circle. There were times along the way where I didn't make it there. But I felt my destiny was definitely to win big titles, win lots of titles.

The most challenging thing is people do see me as a tennis player, but I've had a lot of opportunities because I am a tennis player. And I don't mind that.

Grand Slam losses are hard. I treat myself after losses though, I usually go to McDonald's and I have a hamburger and you know, something. Because you know, you just need to be nice to yourself sometimes after the loss.

My goal is always the same: to keep the other player from ever scoring a point. That doesn't always happen, but that's what I try for.

I don't come to tournaments to make friends, to go to parties, to hold conversations. I come to be the best, and I'm not mean and cruel and dirty.