Do you ever have those books that you really want to finish but that just won't die? My problem usually lies in the book's overbearing sense of proportion.
What I do is create a new item called "Chapter" that repeats every few days (or a day, if you're more ambitious than I). That way, my reading gives me flexibility, and it seems a lot less stressful; if I have to postpone or delete a specific day, it will reappear soon enough without me worrying about neglect. I feel more accomplished when I get a whole chapter read and get to check it off my list.
I usually tag "Chapter" with the book title (especially useful if you're juggling multiple reads), but making a new List altogether works as well if you're really keen on getting the darn thing finished.