Here are some links from the wise Khatzumoto, because I cannot explain it better myself:
http://www.alljapaneseallthetime.com/blog/the-trick-to-reading-more-and-faster/
The only way you will read more books is by putting more books in front of your face. Put the stuff you actually want to read in front of your face, not the stuff that is recommendation or you feel some kind of obligation to. If the book you are reading is not interesting, skip it and find one that is.