Final answer:
The psychological aspect of ego identity involves knowing and accepting oneself, which is integral to Carl Rogers's concept of congruence between the ideal self and the real self.
Step-by-step explanation:
Knowing and accepting oneself is part of the psychological aspect of ego identity. The ego is an aspect of personality that represents the self, which entails our conscious thoughts, feelings, and memories. The idea of congruence, a state in which an individual's real self (who we actually are) closely matches their ideal self (who they would like to be), greatly contributes to self-acceptance. High congruence is associated with positive self-identity and a healthier, more productive life. This ties back to the works of Carl Rogers and his emphasis on self-concept and the need for unconditional positive regard to foster a healthy development of identity.