In psychology, “decision fatigue” is one way in which our willpower gets exhausted, using up our mental resources to weigh the pros and cons of every decision as we encounter them. Decision fatigue can be avoided by making a committed choice. For instance, because Nate decided he was going to be sugar-free for life, he no longer had to decide in various situations whether or not he was going to eat sugar. The decision had already been made, and thus decision fatigue—weighing the options and potential outcomes—was no longer a problem.
