Sometimes you've got to go through hell to get to heaven.

Struggling and suffering are the essence of a life worth living. If you're not pushing yourself beyond the comfort zone, if you're not demanding more from yourself - expanding and learning as you go - you're choosing a numb existence. You're denying yourself an extraordinary trip.

If someone had said to me before I started doing this that a human being is capable of running 100 miles nonstop, I would have just said: 'No way. I mean, how?' If you just go out there and run 100 miles, it breaks down a lot of barriers in terms of self-imposed limitations.

I have my whole office set-up at waist level; I don't sit at all during the day. Sitting, to me, is the devil.

Run when you can, walk if you have to, crawl if you must; just never give up.

If you keep chasing your dreams, one day you'll catch them.

I run because it always takes me where I want to go.