Psychopathology of Everyday Life presents Freud's research into slips and parapraxes from 1897 onwards. It became, perhaps, the best-known of all Freud's writings. When studying various deviations from the stereotypes of everyday behavior, strange defects, and malfunctions, as well as seemingly random errors, the author concluded that they indicate the underlying pathology of the psyche, the symptoms of psychoneurosis. According to Freud, various deviations from the stereotypes of everyday conduct - seemingly unintended reservation, forgetting words, random movements, and actions - are a manifestation of unconscious thoughts and impulses. They can be used in the therapy of neurological conditions.

Sigmund Freud (1856 – 1939) was an Austrian neurologist, most known as the founder of psychoanalysis. Freud authored a set of therapeutic techniques centered on talk therapy. His method involved using strategies such as transference, free association, and dream interpretation. Psychoanalysis became a dominating school of thought during the beginnings of psychology. In addition to his influence on psychology, Freud's ideas have permeated popular culture. We use concepts like Freudian slips, the unconscious, wish fulfillment, and the ego in everyday language.