I think quite often my characters don't do what I want them to do because I don't know who they are. It's difficult to get out of my own head and into someone else's. And after reading the Mary Sue story, I think that might be what it's all about. Mary Sue is a way for a Trekkie to insert themselves as a hero(ine) into the Star Trek universe and be noticed by their favorite characters but she's just a shadow out of someone's brain, not a real person...