Ed Seykota once told me that he taught a college course in trading that lasted 10 weeks. He spent the first week of the class teaching basic information about trading. He then spent another week teaching the class Donchian’s 5&20 trading system. However, he needed the remaining 8 weeks of the class to convince people to use the system he had taught – to get them to work on themselves enough to accept the losses that it would generate.Van K. Tharp