Thomas Schelling, the Nobel laureate and game theorist, said that as he put it, you play tricks on yourself. I think this whole notion of willpower was a kind of transitional phase to say like, I don't believe that my every move is ruled by God. Oh, it's like free will. So I think the two things can coexist.
How can we distinguish between laziness and patience? Why do people do crossword puzzles? And how is Angie like a combination of a quantum computer and a Sherman tank?
Take the Seven Deadly Sins survey: freakonomics.com/nsq-sins/