to follow a routine is to be on autopilot. But one’s daily routine is also a choice, or a whole series of choices. In the right hands, it can be a finely calibrated mechanism for taking advantage of a range of limited resources: time (the most limited resource of all) as well as willpower, self-discipline, optimism. A solid routine fosters a well-worn groove for one’s mental energies and helps stave off the tyranny of moods.