Introduction to Trifix - An Online Enneagram Course

While most information about the Enneagram focuses on one dominant or “core” type, the Trifix theory suggests we also have a secondary and tertiary type within each of the other two centers that are each called a fix. These combine with our core type to produce our Trifix.

This can explain the distinct ways each individual manages life leading to more understanding of self and how they can change their behavior to be more authentic and effective in their personal or professional lives.

In this 3-hour class, you’ll be introduced to the theory and application of Trifix as well as the 27 Trifix archetypes and their “triple focus”.


Course Curriculum for Introduction to Trifix

  • Introduction to Trifix

  • Trifixes with 8

  • Trifixes with 9

  • Trifixes with 1

  • Trifix Triple Focus

  • Enneagram Qualities by Type

Investment: $45

Introduction to Trifix - An Online Enneagram Course

Who is this mini-course for?

Anyone looking to understand themselves and why they do what they do on a deeper level

Coaches or therapists looking to add learn tools to help clients unlock their full potential


Sterlin Mosley Ph.D

Aaron Addonizio M.H.R, M.P.A., Empathy and Enneagram Coach

Aaron Addonizio M.H.R, M.P.A.

Hi, we’re Sterlin Mosley Ph.D and Aaron Addonizio M.H.R, M.P.A.

We’ve been studying the Enneagram for 24 years. First attending Enneagram courses from Tom Condon, Russ Hudson, Helen Palmer, David Daniels, and others, we regularly attended Enneagram conferences where in 2007 we met Katherine Fauvre. Sterlin became Katherine’s protégé around the same time and began doing bi-weekly one-on-one coaching to further his understanding of both the Enneagram and his own processes.

In our Master’s in Counseling program, Sterlin and Aaron researched the Enneagram personality types, and psychopathology and diagnosis, which took us deeper into the work of Claudio Naranjo.

From there, we started our first Enneagram business in 2008 where we delivered trainings to counselors and psychotherapists for CEU credits and then began delivering online trainings and classes the same year.

In 2014, we both became certified teachers and coaches with Katherine Fauvre of Katherine Fauvre Consulting. Sterlin completed his PhD in Communication from the University of Oklahoma in 2014 where he conducted several studies on the Enneagram, self-presentation, and intrapersonal communication.

Until 2021, Aaron worked for several years as Katherine Fauvre’s office manager. In addition to Aaron’s professional counseling education, she received a Master’s in Public Administration in Nonprofit Management.

In addition to Empathy Architects, which we founded in 2019, Sterlin is an Assistant Professor at The University of Oklahoma where he teaches various courses in the Human Relations and Women’s and Gender Studies departments. Sterlin teaches an undergraduate level course on Personality (which is essentially a semester-long course on the Enneagram and other systems such as MBTI, the Big Five, Jungian Archetypes, multiple intelligences, microexpressions, etc). Together, we have delivered countless trainings, workshops and courses.

We both share a love of systems and have a particular aptitude for synthesizing those systems in order to foster greater self and other awareness with the aim of creating greater compassion and empathy for everyone.