This case study belongs to a 28-year-old patient who applied to our center due to loneli-ness, hopelessness, emptiness and depressive feelings. The patient has been using sub-stances since her adolescence. She stated that she used many substances, excluding heroin, including cocaine, synthetic cannabinoids (bonsai), cannabis and alcohol. She was hospitalized with a diagnosis of major depression two years ago. Currently, she has only has been using cannabis, tobacco and alcohol. The Rorschach protocol reveals the main problematic of the patient as containment and boundary needs due to the loss of object while splitting, somatization, regression and depression are eminent in her char-acter. The patient shows the characteristics of the borderline personality organization. The discourses indicative of oral fixations, inadequacy of mentalization capacity, and the dominance of operational thinking are also observable. These findings support the substance addiction theories, which can be summarized as a way of coping with anger, dysphoria and anxiety stemming from the inadequacy of pregenital object relations.