Reddit use a banana as this measuring tool

Trapped in darkness all my days, yet I decide your thoughts and ways.

A faceless ghost with tousled hair, I sweep through oceans of despair. I drink the flood to save the floor, Then weep behind the closet door.

Speak my name, and know rage. Deceived among all ages. Many know me, few speak of me for fear of frustration. And yet I am so simple. What am I?

In the heart of stone and shadow, where warriors lose their way, A twisted path of ancient echoes, where no straight sword may sway. Conquer this maze, the prize is yours to claim, Here the fierce and bold may wander, seeking glory and fame.