Books serve to show a man that those original thoughts of his aren't very new after all. ~Abraham Lincoln
This is something that tortures me sometimes when I'm trying to write my own stories. But for those of you who feel the same, here's this article; scroll down to the one about J.K.Rowling. (I haven't looked at it recently so don't blame me if you see something that offends you.)
http://www.cracked.com/blog/5-artists-who-stopped-sucking-out-nowhere_p2/