Motivated forgetting is a theorized psychological behavior in which people may forget unwanted memories, either consciously or unconsciously. It is not a defence mechanism, since these are unconscious coping techniques used to reduce anxiety arising from unacceptable or potentially harmful impulses. Defence mechanisms are not to be confused with conscious coping strategies.Thought suppression is a method in which people protect themselves by blocking the recall of these anxiety-arousing memories. For example, if something reminds a person of an unpleasant event, his or her mind may steer towards unrelated topics. This could induce forgetting without being generated by an intention to forget, making it a motivated action. There are two main classes of motivated forgetting: psychological repression is an unconscious act, while thought suppression a conscious form of excluding thoughts and memories from awareness.