Tighten Your Belt, Strengthen Your Mind - New York Times

Tighten Your Belt, Strengthen Your Mind - New York Times: "The brain’s store of willpower is depleted when people control their thoughts, feelings or impulses, or when they modify their behavior in pursuit of goals. Psychologist Roy Baumeister and others have found that people who successfully accomplish one task requiring self-control are less persistent on a second, seemingly unrelated task."