In an attempt to answer the question [how much do novelists make], Jonathon Evison has give _The Stranger_ a very honest appraisal of his income and expenses in regards to his three published novels (as well as his six unpublished novels). Well, much of the article really focuses on the first novel. There’s a lacuna where the second novel should be. The short version? Produce. Find a publisher who will help you build an audience. Work at building your audience yourself as well. Be in it for the long run.
[how much do novelists make]: http://www.thestranger.com/seattle/how-much-do-novelists-make/Content?oid=15445088