Inspiration is a fallacy, at least to a point that you can only write under inspiration.
Though my full response is here: http://thepenciledone.wordpress.com/2009/09/03/the-fickle-flare/
I already tackled this question a few weeks ago in the blog, which is the link above, since I would rather not copy and paste haha.
Though good luck with whatever you are working on!!