Roger Bannister is a true legend of sport and specifically someone who utilised failure as a powerful force towards greater things. At the 1952 Olympics he was a hot favourite - but failed miserably. And he was gutted – so much so that he spent the next two months deciding whether or not to quit running.
In the end, he decided to prove to himself, and to everyone else, that he could do better. He decided to use his pain and humiliation to drive himself forward and push his limits.