Just back from a fantastic retreat with Sandra Maitri and the Ridhwan School. Marin county weather, some very coherent teaching, lots of inquiry and plenty of meditation. A fantastic group of people, good times. 15 minute monologues in triads on some penetrating questions.
If you haven't, I encourage you to check out the works of Ridhwan founder A H Almaas and Sandra's enneagram books.
www.sandramatri.com
www.ridhwanschool.org