There's a lot of talk these days about giving children self-esteem. It's not something you can give; it's something they have to build. Coach Graham worked in a no-coddling zone. Self-esteem? He knew there was really only one way to teach kids how to develop it; You give them something they can't do, they work hard until they find they can do it, and you just keep repeating the process.

Chapter 7: I Never Made it in the NFL, pp. 36 - 37 - The Last Lecture (2008)