I have tried to read a book sometimes and if I have not felt into it after the first chapter and my interest isn't sparked to read on then I have to give it up, having said that it can be my mood and another try on another day could prove a different outcome. If I try again and still feel the same then I give up on the book but not the author as some books I love by a certain author but others they have written don't hit the mark. I don't feel a failure if I give up on a book though its a very personal thing like art you either love a painting or you don't, I feel it is like that with books.