Sometimes we need others to help us realize our true potential. The "gap" between what we "know" we can do, and what is truly possible, is rather large indeed. We often limit our potential by sending implicit (and often explicit) "I can't" messages to our brains and our bodies.
Take a look at this story below, and realize how the odds were stacked against this family, this father, and this child. But then realize what became possible, and see the attitude that bursts through what others would call significant disabilities. Even our language has to change. And that requires true (in)sight.