Psychoanalysis is defined as a set of psychological theories and therapeutic methods which have their origin in the work and theories of Sigmund Freud. The primary assumption of psychoanalysis is the belief that all people possess unconscious thoughts, feelings, desires, and memories. The aim of psychoanalysis therapy is to release repressed emotions and experiences, i.e., make the unconscious conscious. It is only having a cathartic (i.e., healing) experience can the person be helped and "cured."