People forget that it is the eye which makes the horizon, and the rounding mind's eye which makes this or that man a type or representative of humanity with the name of hero or saint.
In displaying the psychology of your characters, minute particulars are essential. God save us from vague generalizations! Be sure not to discuss your hero's state of mind. Make it clear from his actions. Nor is it necessary to portray many main characters. Let two people be the center of gravity in your story: he and she.
I do not believe that I am made of the stuff which constitutes heroes, because, in all of the hundreds of instances that my voluntary acts have placed me face to face with death, I cannot recall a single one where any alternative step to that I took occurred to me until many hours later.
There is a determined though unseen bravery that defends itself foot by foot in the darkness against the fatal invasions of necessity and dishonesty. Noble and mysterious triumphs that no eye sees, and no fame rewards, and no flourish of triumph salutes. Life, misfortunes, isolation, abandonment, poverty, are battlefields that have their heroes; obscure heroes, sometimes greater than the illustrious heroes.
Heroes are important not only because they symbolize what we believe to be important, but because they also convey universal truths about personal self-discovery and self-transcendence, one's role in society, and the relation between the two.
Buddha and Christ were second-rate heroes. The greatest men that ever live pass away unknown. They put forth no claims for themselves, establish no schools or systems in their name. They never create any stir but just melt down in love.
It is fear that is the cause of our woes, and it is fearlessness that brings heaven in a moment "The earth is enjoyed by heroes" - this is the unfailing truth.