Mary Bast and Clarence Thomson provide an excellent section on the ethical use of the Enneagram in their book “Out of the Box: Coaching with the Enneagram”.
The Enneagram is not intended to put people into boxes. In fact, understanding the influence of our Enneagram type is the first step in getting out of the box of unconscious habitual behaviour. Remember, we are not our personality type. We are far more than that.
The Enneagram just helps us to identify a potential set of influences that may impact on us. It really is just about using the knowledge of your own type and the types of others and being the watcher in the now moments of our lives.