A pessimistic mentality was usually formed by a combination of factors such as experience, environment, and personal personality. Here are some reasons why you might be pessimistic: Experience: If a person has experienced many setbacks, failures, or misfortunes, he may have a pessimistic view of the future in life. 2. The environment: environmental factors may also cause a person to develop a pessimistic mentality. For example, if a person lives in a competitive society, he may feel that the competition is fierce and thus have pessimistic thoughts. 3. Personal personality: Personal personality will also affect a person's psychological development. Some personality traits such as worry, withdrawal, and self-doubt may cause a person to have pessimistic thoughts. 4 way of thinking: pessimistic people tend to adopt a negative way of thinking. They will see difficulties, risks, and failures as inevitable instead of actively looking for solutions to problems. Too much pressure: If a person is under a lot of pressure, he may feel anxious, nervous and worried, and thus have a pessimistic view of the future in life. A pessimistic mentality could be formed due to a combination of factors. To overcome this mentality, it is suggested to adopt a positive way of thinking, pay attention to the positive things in life, seek solutions to problems, and seek help and support.