Answer:
Psychoanalysis.
Step-by-step explanation:
His therapist is using a psychoanalysis approach, Freud's theory.
Sigmund Freud is the father of psychoanalysis. According to his theory, all neurotic behaviour or traumas are rooted to the first stages of live, in the childhood, that's why Freud use hypnosis as a tool, because according to him, all the answers were in the unconscious mind.