Blame The Bookworm -- On Reading and Self-Sabotage
This too is important: skip ahead a little, or just read the ending and find a way to live with yourself about it, but for godsakes. Give yourself permission to quit a book. If after 40 or 50 pages you are slogging thru, put it down. Do it for yourself but also because it needs to be done.
How do you want to be defined? By one action? By some opinion that could evolve? By a mistake, regrettable only with hindsight? Or by the sum of your parts? Okay, do that for other people. Start the trend.