Sometimes a person does not know he is a hero until he has to be a hero.
Gilgamesh love for Enkidu made his death extremely hard to get over. He greieve for serveral days and did not want his body to be moved. Still full of pain from the loss of his loved one, he travel to evade the same fate.
Job dropping to his knees and praising God after being informed of all his losses.
Hamlet planning to make his Uncle pay for killing his beloved Father.