The prevalence of depression among young people is shockingly high worldwide. By some estimates, depression is about ten times more common now than it was fifty years ago. Depression now ravages teenagers: fifty years ago, the average age of first onset was about thirty. Now the first onset is below age fifteen. Positive mood produces broader attention, more creative thinking, and more holistic thinking. Healthy, productive, and engaged children and teens drive performance, mental health and success. I believe that, were it possible, well-being should be taught in EVERY school because it would be an antidote to the runaway incidence of depression, a way to increase life satisfaction, and an aid to more happiness.