A fight is mental, not just physical and psychological warfare is absolutely part of that.

Doubt is only removed by action. If you're not working then that's where doubt comes in.

Ask José Mourinho, he wouldn't know a thing about me, my sport - he knows football, and to get to high levels you have to be insane, nothing else means anything.

I believe in working harder and putting in the time - being completely obsessed. And, yeah, I think that's life.

Getting enough protein is important when I train, to help build muscle and recover, so I'll supplement with protein shakes.

I think I am the greatest fighter in any class.

I've read a lot of books on the laws of attraction, and in my home I have a big book on Muhammad Ali, which I've read, because he is like a hero of mine, but other than that, no, I'm not a big reader.