Shut the world out, withdraw from all worldly thoughts and occupations, and shut yourself in alone with God, to pray to Him in secret. Let this be your chief object in prayer, to realize the presence of your heavenly Father.

People think I am unemotional because my voice is flat and a bit boring. It is unfortunate but it is just the way it is. I've tried to change it but it doesn't seem to make a difference. The truth is, I have lots of emotions inside. I cried after the semi-final at Wimbledon [2012] because I was proud to reach the final and I knew how much it meant to the country. I cried after the [losing] final [to Federer], too, for different reasons. I felt I had let people down. I think people warmed to that. They could see how much it hurt.

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.

Tipping generally changes depending on where you are in the world. In Britain you don't always have to tip, but I always make sure I do. I have a lot of respect for waiters and waitresses - it can't be an easy job and they often don't get paid huge amounts, so I think it's important to reward them and let them know if they are giving great service.

There's no doubt Milos Raonic will be a very tough final opponent, after all he beat [ Roger] Federer on Centre Court to get there.

Winning Wimbledon, I can't get my head around that. I still can't believe it's happened.

I'm incredibly fortunate and it's important to me to make sure that I give back where I can.