Health practice tells us that people who have a clear understanding of their own psychology can better control their negative emotions and unhealthy psychology and know which psychological activities have begun to decline and which need to be adjusted, thus enhancing their consciousness and initiative in mental health care and improving their adaptability. Personality has an important influence on human health. Psychologists believe that spirit and personality play an important role in influencing people's health and longevity. Clinicians have found that many cancer patients are introverted, reluctant to show their faces and have poor self-awareness before the onset, so it is difficult to develop sincere and profound friendship with others. Experts call this personality "cancer personality". A survey conducted by a French psychologist for 10 years found that the etiology of 63% cancer patients was related to their introverted personality. Therefore, the famous Greek doctor Pocock said: "It is more important to know who is sick than to know what disease a person has." It can be seen that bad personality has a very important relationship with health and longevity. ?