In all honesty, I never actually did anything wrong (in my eyes, at least) at school or misbehaved in any big way. If it was anything, it was probably just a lot of clowning around.

Because I lived so close to the school and walked there every day, I used to enjoy the school bus trips.

I started to really believe in myself, and my abilities, when I won the World Under-10 championship in Doral, Florida. I was nine and saw for the first time that I was amongst the best players in the world for my age. This was a massive confidence-builder for me.

To be a top-class athlete, you have to train hard, you have to eat right, you have to get enough rest. I feel the way golf is going nowadays, you have to treat yourself as an athlete.

I wanted to make a point of basing myself at home, being close to my family. I'll never be able to repay Mum and Dad for what they did, but at least they know they'll never have to work another day. I'll do whatever it takes to look after them.

Of course, money matters to everyone even if some don't want to admit it. If I won the Race to Dubai, I look at that prize money and think it could pay off my new house or the range I'm building. I am privileged to play golf for a living - look around St Andrews, that's my office.

Going to the gym is great for your body, but it's also great for your mind.