Thanks for the tips Cinisajoy! Oh nooo but my poor OCD-side will hate me forever if I don't finish every book I start!
But yes I agree it's the book's fault when I get bored... but some books just take a while to get into and then they're suddenly fantastic. So I do want to give books a proper chance (say, 50-100 pages depending on the total book size) before deciding whether the boredom is the book or me. It's just a struggle to get through 100 pages when the reading is so slow... It is probably a concentration issue as well but I also haven't trained my brain to recognise meanings of words without the annoying subvocalisation. So indeed, I just have to read more, and more interesting books... I won't try Atlas Shrugged then!