If you want to feel good about yourself, be good and do good.
Hitler … attracted followers by offering them self-esteem that was not tied to achievement or ethical behavior—rather, he told them that they were superior beings simply by virtue of being themselves, members of the so-called Master Race, an idea that undoubtedly had a broad, seductive appeal.
Those who feel good about themselves for – no good reason – legitimize exploitation.
As the person performs or behaves better, self-esteem is encouraged to rise, and the net effect will be to reinforce both good behavior and improvement.