I recently read the Design of Everyday Things by Don Norman and it changed the way I interact with everyday - I consider more the way an item can be improved or changed rather than accommodating my usage to its design flaws.
What books have changed the way you think?
The selfish gene from Richard Dawkins. And upside-down look at evolution. Sometimes totally different reasons explain better what seems obvious.
You are not so smart from David McRaney. An easy to read introduction to cognitive bias.
They are not mean to be accurate or the best on their kind, but they did caused some changes on me.