For those of you who want an extremely depressing read that will slowly get more hopeful as you go through it, I recommend Ten Thousand Sorrows by Elizabeth Kim.  It is a memoir with some themes that resonate with borderlines.  If you're in a state where you haven't been able to focus to read a book in months, it is the kind of book you might actually be able to concentrate on.

WARNING: Could probably be triggering for some people.  Read when you feel secure enough to.