I want to be a HERO

Jamie is a normal teenage girl. Well, if you want to call it normal. Everyone has Supernatural powers. But she doesn't. Everyone can be a superhero. But she can't.
She would like to have powers to save the world and the people cares about. But again, she can't. While everyone is trying to pass the superhero exam, she's stuck at home doing nothing.
But when her future-self makes a visit, things aren't the same anymore.