As of nine years ago I do give up on some books, others I persevere at. Jane Eyre took me almost two decades. I got it at the age of fourteen when a friend recommended it. I got through a few chapters put it aside and finished school, moved countries, started college, moved out of the family home, shared a flat, got my own place, decorated it twice over the years then finally I picked up where I left off with the book. I've read thousands of books in that time.