So, this was actually the prompt from Oct. 1, but I wasn't ready for it then. Now I am.
I thought about this a lot. It was harder than I expected. See, my favorite heroes/heroines, the ones from those books that are so well written you can feel yourself there, living everything with them? They go through a lot of pain, stress and hardship. And yeah, they end up wiser, more mature, there's a lot of personal growth...but really, some of these people go through hell first. I don't want to live their lives, I just want to read about them. I prefer to experience their pain vicariously, and I can still benefit from their life lessons.
That said, I'd want to be Hermione Granger. I was the brain in school, picked last for softball, first for spelling bee teams. How cool would it have been to be the brain who could also do magic? If these books had come out when I was a child, I would have been waiting for my letter from Hogwarts when I turned 11.