’Tis the season for attempted lifestyle changes and vice-forsaking of all sorts. For the more resolute, perhaps a new 2020 goal has really started to stick after two months of hard-fought discipline. Others, particularly many Christians, are just beginning to give something up for Lent, a 40-day period leading up to the celebration of Easter. Or at least they’ll try to give it up, whether it be a substance such as alcohol or sugar or, say, a digital denial of the self — like completely staying off of Facebook. Many people fail at these attempts, giving in before the 40 days are up. Why does this happen? The quick answer is that it’s due to a lack of self-control. But if you ask Washington University faculty member Leonard Green, he’ll insist it’s not so simple. In fact he avoids using the term “self-control” at all.