Our mind filters everything to make self-esteem high or low. 
How we view ourselves—as valuable or worthless—constitutes our self-esteem. It influences all our decisions through actions, reactions, and emotions.
Self-esteem is not static. A shy person in adolescence becomes a good public speaker in adulthood. It happens when the graph of self-esteem moves upward. 
The question is what our minds scrutinise. This scrutiny is akin to viewing characters in movies. The same action is appreciated by some people but not by others. 
The majority of people are catching negative features more quickly, while positive aspects are overlooked. This is the reason for the lesser number of outstanding people in the social systems. 
Since infancy, the play of actions and reactions starts shaping self-esteem. In childhood, appreciation promotes self-esteem, while bullying does not allow it to evolve. 
Some people feel more elevated than their actual qualities, and finally, it amounts to self-deception. On the other side, some individuals are in low spirits in all respects. It is harmful in the sense that here, talents are not given a chance to grow. 
The opinions of the people are influencing the growth of self-esteem. However, opinions are not to be accepted as correct observations because the majority of people have no time to judge others fairly.
Individually, we are capable of judging ourselves most fairly. Let us place ourselves on the scale of valuable, as most of our talents are still latent.