With experience, you understand expectations, you understand consequences, but sometimes it gets a little bit hard, especially for me, that I'm a perfectionist - I want to analyse everything. And sometimes it's most important to just let go and trust your instincts. This is what I need to do more of.
Once I became number one, I started working even harder. I changed my technique, but injuries started creeping in - it was a big mistake, as I was doing something right to get to that spot in the first place.
It's not good to stretch when you're cold. Get your heart rate up, and once you finish, take time to stretch and let your body calm down.
After a tough match, I'll do an ice bath, and that's really good for recovery because it helps circulation. Sometimes you feel really swollen.
Maybe 5 or 10 minutes before going on the court, I'll do some fast feet movements or sprint, but the only problem with that is sometimes after you finish warming up, you wait to get on the court, and you end up cooling down a little. It's not always ideal, but that's why I wait until the very last moment to do all of this.
As a people, Serbians are very tall, and we have olive skin and dark hair, which can look very nice. You have to be very beautiful to stand out.
When we were kids, I remember we'd use lemon in our hair and go into the sun, hoping it would make us blond. Obviously, I have very dark hair and olive skin, and when I was a kid, I wanted to be blond, of course. It never worked.
I work out a lot, but it changes day to day. I always start out with some cardio - either a jog, a bike ride, or footwork drills designed specifically for tennis movement. Then I do weights, but I switch the days: one day it's upper body, the next day it's lower body. Then I do stomach and back pretty much every day.
I'm very easy-going off court, but I really want to win once I'm walking on to the court.
Everything in moderation. I keep a healthy body, a healthy look. It's important not to be obsessive about anything - fitness, training, eating - because then you end up focusing on only that. And you can't obsess about anything when you're on the road.
I admire Roger Federer, not only for his tennis but also for his personality.
It was different when I was young, aged 20, playing the French Open. I didn't have so much experience. I just played tennis because I loved the game.
I used to always want to play the perfect match, and this meant not losing a point. The realisation came around the time I was 19 years old, in the French Open final in 2007. This was a key period in my career. I was told I was going for too many winners, which was affecting my game.
You'd be surprised at how many times I'd hit the ball, and the hair would go straight into my eyes. That's why, even when I play indoors, I wear a visor, because it stops that, and I'll apply a lot of gel and hairspray to keep it tight.
I believe I have quality, and that's why I won a grand slam, so I know I can do it again.
My goal is to be No. 1 and to win Grand Slams.
It's very important to take care of yourself. Everyone's lives are so busy. Take at least an hour a day to recharge and do whatever makes you better. For grown-ups, whether it's a spa, sitting in a park with a book, or coffee, take time for yourself.
In cities like Miami, my hair can get so frizzy, it looks crazy. I use TRESemm Extra Hold hairspray. I use a lot of it.
There's really not much friendship between the girls on tour. There's so much rivalry and jealousy, so everyone just hangs out in their own camp. In the locker room and players' lounge, you can feel the jealousy.
I really just try to enjoy the game and hope that I can inspire young kids. I started playing tennis because of Monica Seles, and I try to promote the sport in the best possible way. Sometimes it's hard because you get upset on court, but I think in life one learns through experiences in order to evolve as a person.
