The book’s title is Daily Rituals, but my focus in writing it was really people’s routines. The word connotes ordinariness and even a lack of thought; 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.