Making an assumption or thinking you know what the book is all about before you even open up the cover. Have you done this and have you learned from the mistake?

I have, but I can't really say I've learned from my mistakes because I do keep picking up books that seems like what I want to read but ends up being completely just...

Sometimes it takes for you to do that many times before you can find the book in which speaks to you the most and that's kind of all part of the learning experience is now