I can't write a book but I wrote a whole ass letter to make my classmates change his mind on Severus Snape. He though this guy was good. Thanks to my English lesson who was boring I was able to write it and boom. My classmates did change his mind.
Right after I told him "if I want I can make you hate any character" he was like "nuhu not Dumbledore" I literally said "that's an easy one" he was chocked I hated this old hag