Do you sometimes worry so much that it interferes with your everyday activities? Or feel so blue that it completely clouds your outlook? Do you often experience these or similar feelings together? You’re not the only one. According to the Anxiety and Depression Association of America (ADAA), anxiety disorders — which include generalized anxiety disorder, panic disorder, and social anxiety disorder — are the most common mental health problem among U.S. adults, affecting 18.1 percent of the population each year. And mood disorders — which include major depressive disorder, bipolar disorder, and seasonal affective disorder — are the leading cause of disability.