Emotional intelligence................

     Happily, the skills that help us cultivate emotional intelligence also help us identify and develop the inner factors that contribute to our deep sense of well-being.  The same things that build emotional intelligence will also help us create conditions for our own happiness.  Therefore, happiness may be an unavoidable side effect of cultivating emotional intelligence.  Other side effects may include resilience, optimism, and kindness.  (You may want to call your doctor to determine if happiness is right for you.)
-Chade-Meng Tan,  Search Inside Yourself:  The Unexpected Path to Achieving Success, Happiness (And World Peace)