One of the reasons I got into this game was because I wanted to learn how to get myself comfortable in uncomfortable situations. I grew up in a tough area of Dublin, and fighting was just part of your life. Boys fight, and I won some, but I lost a lot too, and I didn't like that, I didn't like that feeling of not knowing whether I was in danger, in trouble.

I studied every move, I became fascinated by thinking what I could have done differently. And I take that approach now as a professional. I am on it, all the time, never stop thinking, learning. You don't get to be world champion unless you do that.

The term "trash talk" is such an American thing. I still laugh at it.

I love money, and I love movement. I like what it has let me do for my family. I have paid off my mum and dad's mortgage, I've bought them two BMWs, they can have anything they want. I am buying a fleet of cars for myself. I have unemployed my sisters, they don't need to work, don't need to worry about a thing.

To do anything to a high level it has to be total obsession.

You don't get to be world champion unless you do that.

Machines don't use machines.