This article offers a detailed analysis of the concept of subjectivation in psychoanalysis and highlights the importance of this category to understand the psychic and relational characters of the drive dynamics assumed by the psychoanalytic theory. Despite the fact that Freud did not work directly on this analysis category in his clinical and metapsychological studies, subjectivation may act as a hypothesis derived from the historizing impact unconscious drives have on the development of psychic life. In addition to identify the relationships between subject, drive, identification, objects and transference, subjectivation provides a better understanding of the clinical performance of psychoanalysts. To conclude, the psychic and relational nature brought into play by subjectivation is illustrated by a clinical case.