I started to read "words are windows", advised by comments from Amazon customers. I have not finished yet, and I found myself in an angry situation. So I turned to "the unsuspected resources of Wrath" and I read it in one sitting (very fast, it is very small). And it helps a lot. In addition to a more detailed book, like the one I mentioned above, I think it serves as a "memo". It is accessible and at the end there is a small painting that I photocopied to keep him near me. For if the ledger is a further approach, it's hard to remember everything every day! It helps us use NVC to not feel invaded by anger, and for living the "difficult situations" that generate anger. He teaches us to look more deeply and to get rid of the feelings that spoil our daily life. So I highly recommend this book, but to complement a "bigger".