The subconscious is a part of the mind that operates below the level of conscious awareness. It stores memories, experiences, and emotions that influence thoughts and behaviors without us realizing it. This hidden layer of the mind can affect decision-making and reactions, often guiding us based on past experiences. Many psychological theories, including those by Sigmund Freud, emphasize the importance of the subconscious in shaping personality and behavior. It can be accessed through dreams, free association, and other techniques, revealing insights that may not be immediately apparent in our conscious thoughts.