The glass is half-empty, and storm clouds loom overhead, never with a silver lining. Pessimists get a lot of flak for their inclination toward negativity and their tendency to expect the worst in most situations. Besides taking a toll on their mental health, their physical health may take a beating, too. Pessimism, while it may be useful in isolation or in moderation, is associated with anxiety, depression, sleep disorders, hostility, high blood pressure, and heart disease.
