One of the most important reasons that the great ones survive the test of time is because they work hard to improve -- not just their team, but themselves. They look for new concepts or better was to teach what they believe in. When you look at the all-time victory list in Division I college football, this is a major reason why you find Joe Paterno's name. The following comes from "No Ordinary Joe," by Michael O'Brien:
Even after Penn State has enjoyed a successful season, Joe has insisted upon an ongoing process of reexamination. He might alter his approach to the next spring practice. His constant drive for improvement has forced his assistants to seek innovations. “He guards so much against complacency,” and Sandusky. “He is constantly trying to get better and wants to do things differently.”
