Mentalization-based therapy is used for the treatment of personality disorders in people. People who are suffering from personality disorders tend to have bitterness in their relationship and the people around them always feel tense and stressed. The person himself who is having the disorder suffers from a lot of stress and depression. In this treatment, the psychiatrist tries to understand the behavior and the feelings of the person and the person who is affected by it. It helps the person to understand his mental state and those who are part of his life. After the mentalization, people suffering from bipolar disorders have seen a significant reduction in the symptoms.