I'm never going to run this again.

To suddenly be a hero on a world basis was hard for me to understand. God gave me a gift. I got the chance to use it. I didn't think I deserved what people were saying. My talent is just more visible than theirs.

Even today, in retirement, I find it very distracting if there is conversation during a run. I work out as much for my head as I do for my body. I'm a thinker. A lot of my ideas come to me more easily when I am running. That is why I like to run in the morning.

Spend at least some of your training time, and other parts of your day, concentrating on what you are doing in training and visualizing your success.

In terms of fitness and battling through cancer, exercise helps you stay strong physically and mentally.

For every finish-line tape a runner breaks -- complete with the cheers of the crowd and the clicking of hundreds of cameras -- there are the hours of hard and often lonely work that rarely gets talked about.

I am living in Norway, where I am under the care of the best cancer doctor in Norway and I can be closer to my family.