people with hyperthymic temperaments are upbeat, exuberant, jocular, overoptimistic, overconfident, boastful, and full of energy and plans. They are versatile with broad interests, overinvolved and meddlesome, uninhibited and risk-taking, and they generally don’t sleep very much. They become overly enthusiastic about new directions in their lives, such as diets, romantic partners, business opportunities, even religions, and then quickly lose interest. They often accomplish a great deal, but they can be difficult to live with.