Freud planned to complete a series of writings on the technique of psychoanalysis, but the series was never completed. The series makes clear that some of the problems that we associate with psychoanalytic theory are in actual fact a question of technique and methods. In this regard, Freud's notion of the self as a structured and changeable is close to that of Foucault, who regards the idea of a truth of the self as the result of historical and cultural changes.