As a psychology professor, I teach a large undergraduate course called The Science of Happiness. I lecture about how positive psychology—the study of "life above zero" (e.g., self-actualization, fulfillment, optimism, health, and positive emotions)—has often been placed on the back burner. When we're asked to consider "mental health," most of us think about anxiety, depression, and other challenges. But mental health is on a continuum, and it is just as important to cultivate flourishing (e.g., being your best self, living your best life) as it........