"Can only certain people be “heroes?"
Again, it's about performing certain functions and undergoing the process of change. This applies to everyone. For example, everyone has an Ordinary State. Alvie (Annie Hall) is as much of a hero as Superman.
More info / buy the 2000+ stage Hero's Journey And Transformation Through A New World / State at http://www.clickok.co.uk/index4.html or http://www.kalbashir.com