You have a very idiosyncratic definition of heroism there.
From Merriam-Webster:
heroism
which defines itself using
heroic
which in turn refers to the root term
hero
Now leaving aside the definitions that depend on mythological and legendary figures/warriors, we are left with:
HERO: a person admired for achievements and noble qualities; one who shows great courage
HEROIC: exhibiting or marked by courage and daring; supremely noble or self-sacrificing
HEROISM: heroic conduct especially as exhibited in fulfilling a high purpose or attaining a noble end
And to forestall the next definitional argument, the "noble" referred to in these definitions is not the hereditary, social, or legal term, but rather the moral or spiritual one.
Your definition is a VERY
small part of the larger concept.
