1. You develop back problems from trying to find the perfect reading position.
2. You've found at least one typo in a published work, and it keeps you up at night.
3. You develop a fear of book-to-movie adaptations because you saw one (or more) that made you lose all hope.
4. Sleep is never more important than reading.
5. While others get in trouble for talking in class, you get scolded for either reading a book not relevant to the subject, or reading ahead in a book you're supposed to be reading as a group.
6. You become a grammar snob.
7. Bookstores make you giddy with excitement.
8. You run out of shelf room.
9. You develop trust issues with people who don't care for books like you do.
10. You've vehemently defended your stance on the whole "Kindle VS Paper Book" debate.