The better time to exercise some self-discipline, therefore, is at the grocery store. You can skip the aisles that offer all those unhealthy options so that you don’t set yourself up for a failure of willpower later on. Rather than forcing yourself to avoid the temptation of going to your kitchen and grabbing an unhealthy snack, you avoid the temptation of buying that snack in the first place. Instead of having to exercise your willpower indefinitely at home, you just have to manage it for ten minutes at the store.
