"The bedrock of character is self-discipline; the virtuous life, as philosophers since Aristotle have observed, is based on self-control. A related keystone of character is being able to motivate and guide oneself, whether in doing homework, finishing a job, or getting up in the morning. And, as we have seen, the ability to defer gratification and to control and channel one's urges to act is a basic emotional skill, one that in a former day was called will."