Our self-concept is the relational pattern we uniquely have with our self. (Other words for self-concept are "identity", "personality", and "character.")
Our self-concept is a pattern that evolves over the course of our life from mimetic and introspective connections.
The lower your self-complexity, the more fragile you are: Care only about work and family? Get bad feedback from your manager and that’s 50% of your sense of self taking a hit.