Of what import are brief, nameless lives . . . to Galactus? - Stan Lee

If you are interested in what you do, that keeps you going!

But she didn’t know that when she was younger; then, the classroom was just a place that transformed itself based on whatever she was supposed to learn that day, like the Room of Requirement.

Another definition of a hero is someone who is concerned about other people's well-being, and will go out of his or her way to help them -- even if there is no chance of a reward. That person who helps others simply because it should or must be done, and because it is the right thing to do, is indeed without a doubt, a real superhero.