When you have beaten guys a few times, you don't want them to think they know how you are going to play them. You have to try and find different ways of beating them. You have to do things they don't expect sometimes, put something unpredictable into your game.
For much of the year, you're just trying to maintain your fitness. It's not often you get a lot of time to really concentrate on improving it.
I've never felt nervous in front of big crowds and in big stadiums.
I used a lot of sports psychologists when I was younger... sometimes it helped, sometimes it didn't.
When I lost the Wimbledon 2012 final, I didn't know if I'd ever win a slam.
Everything in tennis is so neat and nice but boxing has sport down to its essence; it is very pure and I like that.
I think most players would love, at one stage in their career, to say, 'I've been No. 1 in the world.'
There's two people I would say to try to go and watch who are probably the future of tennis. One girl called Taylor Townsend, she got a wildcard from the event into Wimbledon; she's an American girl. On the men's side, there's an Australian guy called Nick Kyrgios; he's 19, and he was the number one junior in the world.
Staying more controlled mentally stemmed from taking my fitness more seriously. When you're doing track work, sprints and so on, it's pretty painful, but that does make you feel better prepared and therefore mentally stronger when you're going into a match. You know, without a doubt, that you are strong enough to last.
A lot of times, the press guys ask why I take an hour and a half to come to the interview room, but if you don't do the massage and the ice baths and the stretching and the cooling down and the eating, and your opponent is doing that stuff, they already have an advantage.
People say to me, 'You don't seem that interested in interviews.' Well, you know, I'm not, often. I'm not going to talk tactics with the press, so you are left with talking about how you are feeling; for me, it is not the most interesting thing to be doing.
For me, by far, the Olympics is the biggest sporting event in the world.
Boxers risk a lot in the ring. That's one of the things that attracts me to it. You want to see a knockout but I also really don't want to see people get hurt. It's this constant dilemma when I'm watching boxing. The only times I get nervous is watching a really big fight or when my brother is playing. I get to the stage where I'm actually shaking.
When I'm in Miami I like to go and watch basketball, the Miami Heat.
It's easy to start over-thinking things and over-analysing things.
Everyone has to try to give back as much as possible because I think in all sports it helps kids to have role models or people to look up to. Someone like Jess Ennis, I know a lot of young girls have started to get into athletics stuff because of her, because of her success.
I never read. The paper or anything. I watch a lot of movies, and TV series and stuff. But I never, never read.
I've been asked a lot lately if tennis is clean or not. I don't know any more how you judge whether a sport is clean. If one in 100 players is doping, in my eyes that isn't a clean sport.
Earlier in my career, I used to spend a lot of time practising my tennis on court. Now I've learned that it's better to do just a couple of hours on court and two gym sessions a day. That's what's made me fitter and stronger.
The only pressure I feel is the pressure I put on myself to win.
One day for dinner I'll have fish, then the next day chicken, and then I'll have steak. I just try to mix it up all the time. I don't eat the same thing every day.
I do think your personal life has an impact on your tennis. If your private life is up and down, and you're thinking about what is going on back home, then you aren't solely focused on your job, but when things are good back home, it's so much easier when you're on court. It's not necessarily marriage; it's more having a stable relationship.
One of the things I would have loved to have had was a family that worked better together, although I love my mother and father to bits.
I used to think that losing made you more hungry and determined but after my success at the Olympics and the U.S. Open I realise that winning is the biggest motivation.
My speed is something that has made a difference to my whole career. When I've felt quick and I'm moving well, it makes a huge difference to my entire game. When I feel a bit slower, I end up doing a lot more defending. When I'm a bit quicker to the ball, I feel I can attack a lot more.
A lot of the players are very complimentary about each other; they embrace at the end of matches because the level of the tennis has been so good. I think that's something that tennis has got to be proud of.
Well, my mum's been a tennis coach - she coached me till I was 12.
Like most guys, I've always liked watches. I can always check the time on my phone, but having a watch is so much better.
My dinner options are kept simple during Wimbledon. I have either salmon with rice, roast chicken with vegetables and potatoes, or steak with salad. My girlfriend Kim will cook, and I know each night that it will be one of those three.
I often find that pundits are quite negative... not just in tennis, but in sport in general. I just don't like that. Obviously, the job of a pundit is to create interest and a bit of controversy. I get that. Listeners like that. But I do think there's a duty there to promote the sport and talk about how good these people are at what they do.
I had great success with Ivan Lendl. Was he a perfect coach? No. Was he a very good coach? Yeah. He had some very strong qualities and some things that weren't so good.
You are always talking about yourself and tennis and how you are feeling. I try to avoid it when I don't have to.
Everybody always talks about the pressure of playing at Wimbledon, how tough it is, but the people watching make it so much easier to play.
I believe you should give 100% on the court, so I chase every ball.
You can't focus on other people's careers. Everybody is different.
I feel like I'm more a fan of tennis rather than it being men's or women's. I enjoy watching doubles as well when it's on. I think that there are certain players that I enjoy watching on the men's and women's side. There's some players that I don't enjoy watching on both sides.
You have to go into each match believing you can beat all of the players.
Boxing, mixed martial arts and tennis are the hardest sports to train for.
Tennis is an individual sport, and I am quite a self-conscious person.