Self-experience, self-regulation, that is, the so-called knowledge and emotion. Self-knowledge includes self-feeling, self-observation, self-analysis and self-evaluation. Self-experience includes self-esteem and self-confidence. Self-discipline includes introspection, self-examination and self-control, so self-knowledge is a part of self-knowledge. Self-esteem is an important part of self-experience. (2) Self-concept: a mixture of ideas, feelings and attitudes of individuals towards themselves. Self-concept is a part of self-awareness and the most important part. (3) It should be said that self-concept and self-consciousness are classified from different angles, which are overlapping, related and different. Self-consciousness is an aspect of the field of consciousness, which is different from the consciousness of the world and others. Self-concept is the general term of concept. Like any concept, it has extension and connotation, and it is a comprehensive exposition of the most essential attribute of self. I don't think it is of great practical significance to distinguish them now, and there is no unified definition in academic circles.