Well, The Four Agreements is kind of a self-help spiritual book by Manuel Ruiz, and I first heard about it when a student of mine - a high school student of mine - chose it for her own independent reading. The book is a set of suggestions about ways for people to - for a person to create a healthier, happier life, free of the entangling negativity that many people live with.
I liked the fact that he gave people a short list of fairly concrete, what he calls agreements. The person who got a great deal out of it was only a 15 year-old the first time I heard of it, and she said that she wanted to live what she called a free life. And so anyone who is trying to disengage from negative patterns might find some - this work to be a resource. I would give The Four Agreements three and a half to four stars. The only reason it's not a five is that I'd feel that more specifics examples of how to actually - situations where these ideas would contribute to a person's ability to make use of the ideas would be useful. He does give a few, but not enough.