As part of my research work at the Free University of Berlin and the Charité, I worked intensively on questions of problem-solving ability, self-esteem and the ability to empathize of people with narcissistic personality disorders and bipolar disorder and set my main focus here. Narcissism is a complex term that encompasses facets of both the personality of healthy people and a personality disorder. Symptoms relevant to the disorder include reduced self-esteem, which is compensated for by excessive self-esteem, manipulative behavior, emotional abuse of others, a pronounced inability to criticize and difficulty empathizing with other people. Dealing with this personality style requires a lot of confidence, strong boundaries, and all-round knowledge. Without these qualities, there is a risk of dissolving and losing touch with oneself. Narcissists can, but do not have to, stand out through arrogance and self-idealization. There are also the so-called "covert" narcissists who initially appear reserved and shy, but internally they are above the others. For narcissists, dealing with the feelings of others is intrinsically unimportant. They do this solely to gain some benefit and make the other person dependent. In general, whether overtly or covertly, narcissists devalue other people in order to increase their own self-worth. They cannot tolerate the success of their counterparts or criticism, as both lead to a “narcissistic injury”. For this reason, they can only celebrate other people's successes in a mock way, or they have to directly devalue them and destroy them with other topics. Because the happiness of others can lead narcissists into serious crises - even depression. This is why you can never be happy with people with a narcissistic personality style: your own unhappiness is the prerequisite for their well-being.