Yet every once in awhile I stumble upon yet another anecdote that drives home the point of how much more nonfiction is published than fiction.
I discovered just such confirmation when I happened upon the website of Jodie Rhodes in La Jolla, CA.
To give you an idea of how well nonfiction sells vs fiction, we sell 70% of all the nonfiction books we represent (and can do so on the basis of just a short proposal), 25% of YA/Teen books and 5% of adult novels.
Of 300,000 books published in 2009 (Bowker Book Industry statistics for 2002-2009), all but 60,000 were nonfiction. Consider this Goodreads.com list of popular nonfiction for 2010.
So the moral is that you're struggling to write fiction, consider taking a break to write nonfiction in order to accrue writing credentials while also giving a life-giving shot to morale.