The article deals with psychogenetic and neuropsychological principles of envy. Its originality lies in the fact that envy is seen as an unpleasant emotion and feeling, and a negative attitude, projected onto another person who, compared to the object of envy, has certain advantages, opportunities, or is in a more favourable position (social, psychological, physical, financial). Besides, the article analyzes theoretical-empirical and experimental studies on envy, its neuropsychological aspects and influence on the functioning of the brain. It shows prerequisites (genetic and social) for envy as an emotional experience and analyzes the role of social comparison in generating and consolidating envy. The article discusses describes the neuropsychological localization of envy in brain structures and the role of mirror neurons in the formation of envious impulses. It also theoretically proves that envy as a mental reaction is a situational and short-term feeling of dissatisfaction aroused by someone else’s possessions, qualities or luck, which is manifested in a strong desire to have them for oneself right away. Social comparison (not in one’s favour) causes a profound drop in self-esteem, which the brain perceives as physical pain. This triggers specific mechanisms of imaginary psychological compensation when someone else’s defeat is perceived as one’s victory. Short-term envious reactions are based on the natural action mechanism of mirror neurons in the brain that come from “imitative desire”, important for survival. Neuropsychologists have traced the overactivation of mirror neurons responsible for assessment and motivation in those people whose experience of envy is frequent and long-term. The article suggests possible ways of envy psychocorrection based on the neuropsychological mechanisms of its formation.