Behavior, regardless of its type, shape, and size, remains governed by the nature of human thought, its education and the quality of its environment, so the balance in the environment and the passage of healthy thought to the mind will be a patron saint of making a sound mindset, whose integrity reflects on the integrity of the behavior, so the root in the nature of behavior is the thought that nourishes the mind, and when A person becomes a narcissist who loves himself, as this is a prominent sign of a defect in his intellectual environment.
Sociologists, pedagogues, and psychologists search together in the interpretation or definition of selfishness, and present a proposed clarification to it. The arrogance is a tendency to embrace positive opinions about the self, and to reinforce it, and this usually includes a favorable opinion of the self regarding personal traits and self-importance, whether from a mental, physical, social or other side, They see that the ego is mostly crystallized with a feeling that celebrates the centrality of the self, i.e. the personality traits of the individual, and this means that the person takes himself from the center of his world without caring for others, including those he loves or considers them "close", except in the framework determined by this person.
Selfishness is closely related to one's self-love, or what is called narcissism, and some consider that when mentioning selfishness, the image of "social narcissism" appears, and vanity figures have a strong tendency to speak for themselves in a self-reinforcing manner, and they may also be characterized by arrogance and pride, With a sense of greatness regarding their importance. Their inability to acknowledge the accomplishments of others increases their exaggeration of self-esteem, while their sensitivity to criticism may lead them to a narcissistic anger when they feel offended.