The DiMartino Method
For years, I've admired my friend Joanie's systems for keeping track of which books she's read on her bookshelf. She takes gold foil star stickers (the types teachers use) and sticks them on the spines of the books that she read.
I decided to finally do it. I bought the stickers and put them on all the books I read. I was expecting lots of gold on my bookshelves, but once I put stickers on the books, I realized I've hardly read anything on my shelves! I have to get to work!