" channeling emotions toward a productive end is a master aptitude. Whether it be in controlling impulse and putting off gratification, regulating our moods so they facilitate rather than impede thinking, motivating ourselves to persist and try, try again in the face of setbacks, or finding ways to enter flow and so perform more effectively—all bespeak the power of emotion to guide effective effort. "

― Daniel Goleman , Emotional Intelligence: Why It Can Matter More Than IQ