Life ain't easy, and even in extreme situtations some rise above and are successful. Grit is one of the most universal qualities of such people. It's also one of the most universal qualities that we lack. What is True Grit, how do we develop it, and how do we train others to have it? Paul writes his final letter while in prison awaiting his execution--instead of a negative letter full of complaint, it's full of True Grit.