how do you evaluate the concepts of self belief?

You can evaluate the concept of Self-concept through the three components of Carl Rogers which Self Image, self esteem and ideal self

Step-by-step explanation

As Carl Rogers defin self concept is an individual knowlegde of who is he or she a person. You as a person you can identify yourself as active, dynamic and malleable. Sometimes you cannot definitely know what is the real Vs ideal self. It is because of the influence by social situations and even our own motivation as a person and which as always our self esteem suffer in the end