Few things stop the heart of a writer quicker I think than finding a book that seems to be exactly what you're currently writing...
I was ordering books for my library yesterday when I came across a book that at first glance struck me as "Crap! That's the book I'm writing!!" My heart stops, my soul is crushed... Still, I put a copy on hold for me to read and then went on with the day of work.
Too busy last night but tonight I looked up the book and read a little more about it and I don't think it's the same. It does explore some of the same themes. So my heart restarted anyway!
I'll read it when it comes and see.