FIGURE 10.1 Levels of Awareness and the Structure of Personality Freud believed that personality is composed of three psychological processes— the id, the ego, and the superego—that operate at different levels of awareness. If you think of personality as being like an iceberg, the bulk of this psychological iceberg is represented by the irrational, impulsive id, which lies beneath the waterline of consciousness. Unlike the entirely unconscious id, the rational ego and the moralistic superego are at least partially conscious.