Why does a psychoanalyst consider the early processes of a person’s life as the main ones that most influence his today’s life? Because the first years of a child (person) are considered (including according to WHO) the most important a life stage that determines health, well-being, learning and behavior throughout the lifespan. What happens during this period of life? Child psychoanalyst M. Mahler (1975) believed that the psychological birth of a child is accompanied by processes of separation and individuation. Before these processes, the child is in symbiosis (fusion) with the mother. The mother's hands, the mother's eyes, the mother's voice (or another caregiver) are the main supports for the child, from which he begins his path to the formation of his personality. Thanks to constant interaction with the mother, the alternation of frustration (discomfort) and satisfaction (comfort) the child is formed by “something happening outside” and develops a stable image of the mother, thanks to which, in the event of her absence, he can hallucinate, imagine her, remember her on a bodily and tangible level and thereby learn to endure loneliness. Through this process, the child subsequently begins to distinguish the mother’s image from his own, to separate himself and the mother, i.e. boundaries appear between him and his mother. The process of separation forms the image of the mother in the child, and the process of individuation - of himself. If this period of a person’s life (from 0 to 4 years) goes well, then we see a completely healthy adult, capable of coping with the hardships of life, with anxieties, fears, diseases, i.e. can stand up for himself in life, because he (she) was able to separate from his mother in a normal manner. The normal completed process of individuation gives us the vision of an adult (adult) with his own interests, desires, ambitions and easily finding himself in life, in love and work. After all, these are the two main vectors of human life development. The consequences of disruption of the separation-individuation process for development are deplorable. In case of excessive frustrations, abrupt separation from the mother, the child’s stable image of the mother may be disrupted, and his psyche may be subject to serious consequences of a depressive, psychopathic nature. Conversely, in the case of a slow, untimely separation from the mother, the child may develop a feeling of obsessive dependence on her and an inability to think and behave independently. These important processes in a child’s life influence his subsequent development. Many mental illnesses are associated with this stage of development. Regarding pathogenesis in general: if the symbiotic phase goes unfavorably, psychosis develops. Milder, non-psychotic disorders (such as borderline states, narcissistic personality traits, etc.) arise when the separation-individuation process, although generally occurring, is disrupted by unhealthy deviations or serious disorders. But also neuroses ultimately have their roots in incomplete individuation and insufficient separation from mother images.” D. Winnicott in his work “The Theory of Parent-Infant Relations” talks about the importance of maternal continuity, i.e. a child, receiving sufficiently good care, forms a continuity of existence in his mental space. Based on this continuity of existence, the innate human potential gradually develops in the baby. If maternal care is not good enough, then in reality the baby does not enter into life, since there is no continuity of existence. Instead, his personality begins to be built on the basis of reactions to environmental threats. It will be difficult for such a person to cope with any difficulties in life, in learning, in communication, in building relationships, etc. A person will tend to avoid, tend to underestimate his value. Relationships with the father, both the mother and himself, also play a very important role in the formation of personality..