Each of us is the hero of their own story. Write about a person in a position of no great authority or importance, someone with no expectation for heroism or greatness. Toss this person into something that scares the living shit out of them–something well out of their weight class. They must not only fight to survive, but must bide their time and set conditions for success. The situation must be one with no possibility of backing out. They’re compelled to resist wrongs being done with a slim chance of escaping imprisonment, exile, death, or whatever consequence they fear most. Try to get the whole idea down in one sitting.