Whenever adverse circumstances create an atmosphere of vulnerability, we humans instinctively try to regain control. Pessimism, which can be expressed as negativity, doubt, or fear, is an acquired, twisted strategy whose aim is to make us feel more in control. However, far from feeling more in control, the pessimist’s self-doubt, self-distrust, and lack of confidence only lead to the hand-wringing anticipation of the many things in life that could go awry, the what-ifs and yes-buts of doubt and fear. There’s a subtle difference between pessimism and worrying. Where worry anticipates specific things going wrong, pessimism is a capitulation to negativity in general.