I'm impressively stubborn, sometimes to a fault, yet I prefer to prioritize my mental sanity above forcing myself to read a Book from start to finish that blatantly isn't working for me.  While I'm by no means a liberal DNF-er, I average approximately 1-2 books per year that I permanently set aside without completing them.  When I first started blogging, my brain absolutely refused to accept the concept of not reading a novel in its entirety.  Needless to say, I had several excruciatingly painful reads in which I miserably limped along until the very last page and then promptly dove headfirst into a reading slump.  As my TBR pile started to grow exponentially, I gradually recognized that I would not be struck dead by a bolt of lightning if I elected to set a book aside in favor for a higher priority or more promising read.  In hindsight, this was one of my most important realizations with respect to my growth as a reader.