As a child I think I may have had mild obsessive-compulsive disorder. If I took a drink, whether it be from a tap or a cup, I had to have an even number of mouthfuls, and preferably in multiples of two and then four etc.. Two, four, eight...and if I accidentally took that ninth swallow, I was up for sixteen, and then after that... well, it was a stretch for the bladder. I also could not stop reading on page or chapter 13 - or multiples of 13. That meant some late nights if I was reading a book with long chapters.
I'm over the water thing now (tg!) and over the multiples of 13 thing - but I still cannot stop reading on chapter 13, or any chapter before or after. So I still have to decide whether or not to stop at the end of chapter 11 or if I forge on to the end of chapter 14.
OK, so now you know I'm a complete freak, do you have any weird reading or writing superstitions or habits?