A long shot here but I'm looking for the earliest instances of the fighting trope that sees the warrior turn the tide of battle through some form of internal reflection or memory, that conjures up an inner strength or motivation. Think most Rocky films, or Daniel-san doing the crane. The earliest I have is Sanshiro Sugata from 1943, with our hero overcoming after remembering the image of a flower. Any earlier plays, literature or paintings that depict similar are also welcome. It's not just the general motivation for revenge (although revenge is a common component), it's more an abstract moment of revelation that I'm after.
The Iliad is perhaps something similar in macrocosm, with memories, grudges, reflections and the will of the gods dictating the ebb and flow of battle, rather than individual warrior prowess. Is Jesus's "why hast thou forsaken me" before his ascension a variation? There is often a spiritual (supernatural even), revelatory implication to it, even in the shitty superhero films that employ it. I can't help thinking that Hamlet's soliloquy is doing something similar. Perhaps it's simply that deliberate plot pause for the inner monologue that Shakespeare does a lot.
Tvtropes might have something on it but I can't stomach that miserable website. And I refuse to trawl through that kind of poorly compiled reductive criticism, designed to be read by the idiot children of idiot children.
Earliest or just good ones.
Also, I don't need the examples where Iron Man uses visions of his falling share portfolio as motivation to drone strike a Middle Eastern daycare center. Though they are applicable.