Psychoanalysis began with the discovery that a perfectly physically healthy person could suffer from an illness with physical symptoms arising from things trapped in the subconscious known as hysteria. Charcot, a French neurologist, attempted to free the mind through hypnosis. A Viennese doctor, Josef Breuer, took this purge further with a process based on his patient, Anna O., revealing her thoughts and feelings to him. Sigmund Freud took Breuer's method and made generalizations that developed into conceptualizations and ultimately theories of psychoanalysis. Freud listened to his patients, then used those thoughts to interpret what was happening in the unconscious part of their minds. This has been explained as bringing the unconscious into conscious awareness so that it can be treated with therapy. Breuer and Freud's successes with this method led to the seminal publication of Studies in Hysteria in 1895. Freud continued his practice of the theory until it became the system of psychology known as psychoanalysis , a system that is the most influential psychotherapy theory of our time. . A brief overview of psychoanalysis is seen through the foundations of Freud's theory. Freud began with his study of the three forces of the psyche: the id, the ego and the superego. The id is the unconscious and contains most inherited things and all-encompassing instincts. The ego is the conscious one and must control the ever-demanding id by serving as its link to the outside world. The ego is a regulator and responds to a stimulus by adapting or fleeing, regulating and seeking pleasure while avoiding unpleasure. The superego is actually managed by the id. He bears responsibility for limiting satisfaction and representing the influence of others, including that of parents, teachers and other role models. It also represents the impact of racial, cultural and societal traditions. Instincts, which are mostly part of the id, are the cause of all human behavior. Behavior is further composed of two basic instincts which are Eros (love) and Death (destructive and aggressive). Eros is responsible for establishing and preserving the unity of relationships. Death or the destructive instinct aims to appear in the middle of the paper. All human failures and weaknesses can be examined, talked about, and ultimately resolved. Typically, an analysis lasts a few years, with four to five sessions per week of approximately 45 minutes each. In this way, psychoneuroses and narcissistic personality disorders can be successfully treated in the majority of patients. Severe mental illnesses such as schizophrenia, manic-depressive illness, and psychoses caused by dysfunction of a brain organ cannot be cured by psychoanalytic treatment, although the patient may often benefit from psychopharmacological treatment – ​​sedatives , tranquilizers, antidepressants… in combination with psychotherapy. The longevity of success through psychoanalysis becomes a testament to Freud's in-depth study of the human mind. His more than forty years of work in the field have been devoted to the development of the main principles of psychoanalysis as well as the techniques and methods used by the analyst. His work was further developed by his daughter, then adopted and then adapted by Erikson. What seemed so revolutionary in the 1890s and beyond is now widely accepted by most schools of psychological thought and scholarship..