The difference between ordinary and extra-ordinary is so often just simply that little word - extra.

Are you the sort of person who can turn around when you have nothing left, and find that little bit extra inside you to keep going, or do you sag and wilt with exhaustion? It is a mental game, and it is hard to tell how people will react until they are squeezed.

Exercise helps my back. If I don't exercise, that's when it starts to hurt. The pain is a good motivator to run and exercise.

Our dreams are just wishes, if we never follow them through with action. And in life, you have got to be able to light your own fire.

A friend once asked me what qualities were needed for SAS. I would say to be self-motivated and resilient; to be calm, yet have the ability to smile when it is grim; to be unflappable, be able to react fast and to have an ‘improvise, adapt and overcome’ mentality.

There's no magic to running far or climbing Everest. Endurance is mental strength. It's all about heart.

Look, sometimes, no matter how hard you try, sometimes you need a bit of luck.