I am currently reading my way through a long list of science fiction and fantasy titles. (http://www.npr.org/2011/08/07/138938145/science-fiction-and-fantasy-finalists if you are interested in the list).
I can already see where Hubbard's childhood experiences are reflected in the environment he wrote for Battlefield Earth. Can also see where he got his tendencies to stretch the truth and run away from his debts! As the twig is bent, so grows the tree.