If you struggle to conceptually understand the different between a modern thinker and a postmodern thinker, this link may help. It's a video remake of a book that was written over 50 years ago. It's about a little boy who creates his own reality by drawing what he wants to see and experience.
I don't want to say much more about it because I think to truly see the differences in the ways of thinking, you probably have to experience the book yourself. But it's as good an example as I've seen of postmodern thinking. The book itself is available here.