Always think of things in a bad way may be physiological reasons, may also be a kind of depression and anxiety psychology, should be clear reasons, and targeted treatment. 1. Physiological reasons: daily life mental stress, or experienced a large setback, in a negative environment, etc., will lead to a negative way of thinking, the more you think about the consequences of the more serious to think the worst, into the negative emotions, is a normal state of mind, should be adjusted in time, outdoor exercise or talk to friends and family, and so on. 2. Depression and anxiety: depressed patients, usually manifested as depressed mood, it is difficult to be happy, not interested in many things, look at the problem is very negative, showing excessive anxiety and worry, should go to the regular hospital in time for diagnosis and treatment, follow the doctor’s advice, timely adjustment. When always think of things in a bad way, should be adjusted in time, if it has affected the normal life, should be timely medical treatment, do not blindly judge yourself, to avoid leading to adverse consequences.