One thing you gotta take into consideration is that it's professional wrestling, and you know it going in. There's dangers to every profession, and our particular profession, concussions is one thing.

When I was with WWE before, I was a big guy throwing people around - power moves. Then after that, when I left WWE, I was like, 'I still enjoy professional wrestling,' but some of the smaller guys look up at me and say, 'I don't wanna wrestle him. I don't wanna get thrown around by that guy.'

My philosophy is, if you work as hard as you can, you give yourself as many opportunities as you can to be successful and lucky.

One of my first overseas trips with WWE was to France. I walked out of our hotel, and I see a little kid walking toward me with his mom. He gets a couple of steps past me and he stops in his tracks. I see his mom do a little bit of a double-take, then he runs over and just grabs on and starts hugging my leg as hard as he can, then he starts crying.

What is time, really? When you are diagnosed with a terminal disease like cancer or leukemia, your perception of time changes.

I feel blessed that I haven't seen or felt real pain to be immune to it. But I am dreading the time it comes. I feel blessed to have everything going fine. My parents' health is good, my brothers are well-settled, I have a great brother-in-law and my own career is doing fine. I hope and pray that I am fit and fine always.

Just as an individual's ability to delay gratification at a young age is a powerful predictor of future academic and professional achievement, discipline is also central to the long-run economic health of nations.

I ask myself: What do I need to do to stay healthy? And I do that all the time. And it's stuff like meditation, making sure I get good exercise, all the things we know.