IntroductionWill tends to wear only one face in our imagination: restraint. "I held out," "I resisted," "I beat the temptation"—these are the phrases we reach for as proof of willpower. But the will that decides actually has two faces. One is inhibitory self-control: the will to refuse what we want. The other is initiatory self-control: the will to actually do what we don't want to do. Our langu..