-the self can function in three ways, as the Id, the Ego, the Personality. The Ego is an active function, implying awareness of my needs and taking responsibility for my choices. Losses of ego function are often called 'resistances'.
Definition excerpted with permission from Ginger, Serge International Glossary of Gestalt Psychotherapy (Seven languages including English. Order from FORGE at 183 rue Lecourbe; 75015 Paris, France) Paperback 1995.