Whether you win a match or lose a match, in terms of your emotions, it's important to be pretty levelheaded.
I have had lots of luck in my career but there has also been a lot of hard work.
I'm always on the go. I love doing things until I hit rock bottom. Then I need my 12 hours of sleep, and I'm on the go again.
I'm focused on going out every day and doing my best.
Music is a part of my life all the time - on the plane, before matches, driving out to the court.
Without my dad, I wouldn't be here.
When I make a commitment I stick to it.
Ever since I was young I loved making things and being part of the design process.
I love to eat, and if I could, I'd eat every second of my life.
When I'm down or maybe when it's close in the match, I feel like I'm still in it. I don't feel like I'm letting down. Mentally, I'm still really, really tough.
I'm just like every other girl who likes to shop, likes to look good, likes to spend time with friends.
There are days when I go out on the court and I feel like I can't miss a ball.
My family and I built my whole career from scratch.
I don't do heavy weights at all.
The more matches I play, the more confident I get.
I love what I do and I love being an athlete, but I also love all the things that have come with it.
I don't get to do as much sightseeing as I would like to.
I don't need many things. I don't need glamour and attention to be happy. I'm very happy being settled and working my butt off and trying to win grand slams.
I've been very competitive by nature from a young age, whether it was eating a bowl of pasta faster than somebody else, or always wanting to be the first one in line.
I always have a Sharpie, because usually when someone asks me for an autograph, they don't have a pen. I carry one in my purse, as well as in my tennis bag.
When I walk through that gate to the court, that's my escape. I block out everything, good and bad.
As an individual, I take every match seriously, no matter who I'm going to play.
I look forward to the challenges.
I help design my own tennis clothes.
When you're going through tough moments, you never know when you're going to have good moments.
It's always tough when you lose - you've worked so hard for that moment and it hasn't gone the way you wanted. But you have to realise there's always a bright side, you have to pick yourself up and get ready for the next game.
I love jotting down ideas for my blog, so I doodle or take notes on all kinds of stuff that inspires me: the people I meet, boutiques I visit, a florist that just gave me a great idea for an interior-design project, things like that.
I want my tennis to speak for everything.
Sometimes when you're putting the work in it just seems so, so hard, and you never know when that work's going to pay off.
I heard endless conversations between my parents when I was going to sleep about how we would survive, how we would continue. All of them were about trying to make me better.
Since I'm constantly in the sun, I use sunscreen daily.
I find a lot of inspiration in street style and watching women walk, the way they wear things and what they're wearing.
No matter what you study, the thing that you know best is what you grew up with.
I love getting consumer reports. I think it's one of my favourite things, studying what people have to say about the product and then trying to make it better.
To be honest, everything in my life outside of tennis is great. I'm doing amazing projects that, if I didn't have time off, I wouldn't be able to focus on.
When I need to push myself, I think of all those nicely polished trophies waiting to be lifted up by the winner - and how that winner might be me.