There is a famous scene in the original Peter Pan. Peter is in the children's bedroom; they have seen him fly, and they wish to fly, too. They have tried it from the floor and they have tried it from the beds and the result is failure.
"How do you do it?" John asked. And Peter answered: "You just think lovely, wonderful thoughts and they lift you up in the air." There is also a wonderful moment in the movie, Hook. The movie concerns a grown man with a family that discovers he was Peter pan. He has to go back to Never-Never land but he has a big problem. He no longer remembers how to fly. He knows he is supposed to think of lovely things, but it doesn't seem to work. Finally, he thinks of his family and that causes him to fly again.
-Michael Shannon, Preaching March/April 2003