Matt Cheney has posted a very helpful list of rules for aspiring writers. If you want to become famous on the blogosphere as someone who knows everything there is to know about how to become a successful writer, and become a regular feature of convention panels about how to break into the writing business, but don’t actually want to be published yourself, I suggest that you pay very close attention to this.
Update: I understand that Wikipedia has asked Matt for permission to re-publish his post as their definitive guide to How to Write.