" The simplest truth is that we’re all killing ourselves with our temperament. A person will tend toward being bossy, or high-strung, or depressed, or listless. And this has predictable physical consequences. If we don’t learn to become aware of our moods and take steps to moderate them, we’ll eventually die from our habits. This is where heart disease, cancer, diabetes, and autoimmune problems come from. "

― Carolyn Jourdan , Out on a Limb: A Smoky Mountain Mystery