I've always been pretty careful at keeping track of my spending, so using my debit card is often the easiest way of doing that.

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.

As a child I was a good boy. Even if I wasn't playing tennis I don't think I'd have done things like smoking or getting drunk. I'm lucky I never liked the taste of alcohol - I know, I'm Scottish so what's wrong with me? - but I never even liked the smell of the stuff. It's the same with smoking, it never appealed to me. I guess I missed out on my Kevin-The-Teenager phase.

I never read. The paper or anything. I watch a lot of movies, and TV series and stuff. But I never, never read.

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.

O, let the place of secret prayer become to me the most beloved spot on earth.

I had to pay an incredible amount to get insured on it and, after a couple of weeks of driving it around, I realised it wasn't quite my style. I'm not flash by any means but a bright red Ferrari is a definite head-turner and I hated that. It was also incredibly impractical, particularly when it came to finding space for a friend or for my tennis bag, so I decided to sell it after a few months.