Consider this, before Roger, most people believed that if you ran that fast your body would shut down and there would be a good chance of death. Roger took a different look and believed that a human being could indeed run that fast and set off to prove it. What made the difference though was getting a coach that inspired him to believe that He could break the four minute mile. This was a giant shift in thinking. It went from being a concept, a thing to chase, to a goal, a thing to be achieved.
This is profound if you think about it. No more, sure it can be done, to sure it can be done and I'm the one to do it. So I ask you this question, "What do you believe?"