I try to anticipate the ball well. That's something that's helped me since when I was a kid. Just learning to anticipate and read the game well. That's helped me. When I moved over to Spain and I was 15 I was playing with big guys who were 22 years to 28 years old and I was 15 so I couldn't beat them with power. I had to beat them with touch shots and variety and anticipation and all of those things. I learned a lot when I was over there.

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.

A lot of athletes use sports psychologists.

I first had money for investment just at the time of the 2008 crisis and shares have been highly volatile since then. So I do have shares in my pension but I have tended to invest in specific projects that include property and private companies that have been very well researched by my advisers.

Owning a property is great as that's my base and the centre of my family life.

I wouldn't say I'm a spender in the sense that I'm going out on huge spending sprees. However, to be able to function at the top of your game on the professional tennis circuit often requires an element of frequent spending.

I listen to my iPod as I walk on. If I'm winning I'll listen to the same song, that's like a good luck thing - usually The Black Eyed Peas' Let's Get It Started.