I would never attempt to dissuade anyone from reading a book. But please, if you're reading a book that's killing you, put it down and read something else, just as you would reach for the remote if you weren't enjoying a TV program. Your failure to enjoy a highly rated novel doesn't mean you're dim - you may find that Graham Greene is more to your taste, or Stephen Hawking, or Iris Murdoch, or Ian Rankin. Dickens, Stephen King, whoever. It doesn't matter. All I know is that you can get very little from a book that is making you weep with the effort of reading it.