I hope I don't get too many people mad at me for this one, especially because some of my friends are religious and I'm an atheist and I'm honestly not trying to offend any of my friends but this is my opinion, OK?
A book that came to you at the wrong time
The bible. I think kids get taught religion when they're much too young to think critically about it. My parents' religious beliefs really screwed my head up and are one reason my childhood was so fucked up.