People always say golfers don't smile. But there is so much psychology in golf so we have to be a bit robotic.

Golf is played between the ears and if you are not 100 percent focused on what you are trying to do, then people will go past you no matter who you are.

My dad said: 'It looks like you'll be world No.1 in a few hours and I wanted to be the first to say congratulations.

I'd been told there are 10 difficult holes and eight impossible ones. I'm still trying to work out which the 10 difficult holes are.

I'm heavier, but with muscle rather than flab. It's a massive difference. It means I don't get as tired sometimes and it means that I'm hitting the ball a lot farther, about 15 yards more with my driver.

I've started to show the consistency in majors I had in regular tournaments back in 1998-2000 when I was contending nearly every week.

Now I'm giving up a little in the week-to-week tournaments but reaping the benefits in the majors.