How to discuss religion with believers?

[BrianSoddingBoru4]

So, my soon-to-be-released magnum opus, 'Leprechauns: Not Just For Breakfast Anymore' is foredoomed to failure?

Boru

In this case maybe subjectively define what you would consider "success" or "failure."  Maybe also provide more detail about the subject so that others can understand what it is to you and your expectations for it.  The latter isn't necessary though, but could be helpful for feedback.

Fair dues. 

Success:  The book sells enough copies that I can finally afford that solid rhodium toilet seat I've been pining for all these years.  Spielberg options the film rights.

Failure: The book sells exactly one copy.  The purchaser is so disappointed that s/he hunts me down and beats me to death with my own book.

Subject:  For years, people have been eating leprechauns for breakfast.  The book examines how they can be used for brunches, suppers, late day snacks, and those intimate romantic dinners when burgers and chips just don't set the right mood.

Boru