Sandra Maitri was a member of the first group of students to whom the Chilean psychiatrist Claudio Naranjo presented the enneagram system in the U.S. almost three decades ago. Throughout her many years of studying and teaching it, Maitri has preserved the legacy of this original transmission. In addition to her work with Naranjo, she has studied with various Eastern and Western spiritual and psychological teachers, including A.H. Almaas, founder of the contemporary spiritual path, the Diamond Approach. As one of the principal and supervising teachers of the Diamond Approach, she teaches the enneagram as part of the larger work of personal transformation, working with hundreds of students each year in the U.S. and Europe. She lives in Marin County, California.