I just finished reading Carol S. Dweck's "mindset", and I wish I could have read it years ago! Does a wonderful job providing a mental model for wetware refactoring. I'm always looking for tricks to curb my reptile brain, and this book was full of them. Also, it was written in a very readable style and had many interesting anecdotes from a variety of sources including education, athletics, relationships, and business.
I specifically picked up this book because it was very highly recommended on the "Agile" subreddit, and I was not dissapointed!