“Without the momentum of a stern discipline, motivation is mostly a momentary, flighty emotion. For it works best under the supervision of discipline, but can serve as not only an ally but also an enemy: because in anything that requires your self-discipline - whether going to church, going to classes, going to workouts, going through trainings, completing jobs, reading books, living well, eating healthily, studying, practicing something - the more times you skip, the more relaxed and motivated you'll become about skipping; and the next thing you know you've quit your fight altogether (or, put in short, the more you skip, the more you'll skip until you've quit). Maybe then you'll see that motivation bears its fruits when watered by discipline, but it spoils when not.”