The first 4 agreements was a revelation, and if you do the effort to incorporate these teachings in your life, you will change your existence.  I found the 5th agreement not to be such a continuation from the 4 agreements but a complete summary of the deepest most sacred, secret, esoteric teachings that are found in every tradition. Explained in a way making it easy and to assimilate. Again, once we really understand, grasp and incorporate these teachings, they are beyond valuable. An amazing experience.