Success leaves footprints -- I firmly believer that. Follow (and study) those that are successful and you will learn a great deal. However there are always a few common traits of the great and one is they are they are continually looking to improve -- no matter at what level they currently hold. To follow is a great story that comes from "3 Things Successful People Do," by John Maxwell:
It's said that when Spanish composer-cellist Pablo Casals was in the final years of his life, a young reporter asked, "Mr. Casals, you are ninety-five years and the greatest cellist that ever lived. Why do you still practice six hours a day?"
What was Casals's answer? "Because I think I'm making progress."