I love this movie. I saw myself in the kid Peter and the playwright portrayed by Johnny Depp.
When my stepmother had to go into hospital for surgery when I was between five and seven, I cried and cried. I did not realize that one could go into hospital and come out better. I was an angry unhappy kid who retreated into a vivid fantasy world. I used to curl up on the sofa and tell myself stories for hours. From age eight onwards, I wrote stories and poetry until I studied calculus and economics in college and lost that ability (haven't written any poetry or short stories since age 21).
My usual experience of watching a movie or reading a book or watching a sporting event is to put myself into the action and wonder what choices I would make. This has often made reading and watching a painful experience because I over-empathize (in my normal dealings with people, I under-empathize, but give me a figure in a certain novel or movie, and I am all compassion).