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.

Exercise and sports are greatly affected by what goes into the mind, and the mind is greatly affected by sports and exercise as well. This is true among exercisers at all levels, despite their different goals. A major element in mental training is visualization ... Visualizing a positive outcome can create a pattern of success, as long as you set realistic and specific goals.

Not only is [a half marathon] a good test for the marathon, it is also good for those who feel they were just getting going in a 10K and are physically and mentally primed to go further. A half marathon is a good test of your endurance, without the physical punishment of going the full 26.2 miles. More so even than the 10K, it will teach you about patience, pacing, and how to negotiate a wider range of physical and emotional cycles.

Some people feel 'transformed' from the first day they begin running; others feel that it's just plain hard work. Most of us realize it is both. I know how great running can feel, but I also know it can feel not so great, even downright awful! It can be fun, but it takes work to have that fun.

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.

I'm never going to run this again.

Another inspiration that has helped me get through has been Lance Armstrong's story. My cancer is not nearly as bad as his, but I believe in staying motivated and keeping as fit as you can.