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All trainers listed on this page are Licensed to use the Core Transformation Trainer Materials Packet. All have access to these detailed and extensive Trainer Materials. These materials are an essential background to offering you a high-quality training. These trainers have not gone through a specific mentorship and review process to become a CTTA Trainer. (Some live on other continents, making this impractical). However, many (if not most) are highly experienced and capable Trainers, having developed their Trainer skills through a variety of routes. We encourage you to read their biographies below to learn more about each trainer. Whenever possible, we suggest getting a direct experience of the Trainer you are interested in. Many offer free public presentations.


Harmon Chang, Licensed Trainer of Core TransformationHarmon Chang, M.Sc., is an NLP Master Practitioner certified by NLP Comprehensive. Harmon was the first trainer to be licensed to use the Core Transformation Trainer Materials Packet. He is also authorized by Connirae Andreas to translate the participant materials into Chinese, which he uses in the Core Transformation workshops conducted in Mandarin. Harmon has studied directly with both Connirae and Tamara in learning the Core Transformation process as well as the Trainer Materials Packet. He has delivered NLP and Core Transformation workshops in Taiwan for years. In addition, Harmon founded a branch of NLP Cafe in Hisnchu City in 2007, which is currently one of the most important NLP practice groups in Taiwan.

Harmon is also a creative thinking trainer, coach and facilitator. He is the founder of Collaborative Genius Consulting serving customers in the Greater China area.

Contact Harmon Chang:
P. O. Box 24-315 Hsinchu
Hsinchu City 30099
harmon [at]


Donald Pelles, Licensed Trainer of Core TransformationDonald Pelles Ph.D., has been using Core Transformation with his clients and for himself since mid-2007. Over the past two years he has assisted with Tamara Andreas’ trainings several times, as a coach. He has presented a number of CT trainings since becoming licensed in early 2012 and hopes to do many more.

Donald helps his clients resolve troublesome issues in their lives, using modalities of hypnosis, NLP, and Quantum Focusing. He is the organizer of the very active Hypnosis-NLP DC Area Meetup group.

Donald was a mathematics professor and for many years a software developer before becoming a certified as a Hypnotherapist in 2007. He was certified as an NLP Practitioner in early 2008.

He has been married to Rosalyn Pelles since 1977; they have three grown sons, two granddaughters, and two great-granddaughters. He sings with the DC Labor Chorus and plays tennis whenever he can.

Contact Donald Pelles:
don [at]
Hypnosis Silver Spring
10410 Kensington Parkway, Suite 224
Kensington, MD 20895


Yukari Tokonami
has been a successful counselor and developmental coach for over 1,300 corporate clients in Japan over the past eight years. She is a certified NLP trainer associate and has conducted various seminars and workshops in communication through NLP in Japan.

Yukari's Core Transformation Seminars are conducted in the Japanese language.

Contact Yukari Tokonami: [at]




Tommy Doo, EMBA., is one of the pioneers of the NLP industry in Asia, providing NLP training both for individual and corporate clients in Hong Kong, Macau and China, having trained more than 10,000 organizational leaders.


Tommy is a certified trainer of Neuro- Linguistic Programming. He is also a certified Instructor of Hypnosis and a certified Trainer of NLP  Coaching. He is the author of the best selling book "NLP in Coaching".


Tommy has worked in the field of human potential since 1998. His extensive travels throughout 16 countries and four continents help make his presentations stimulating and unique. Tommy has his NLP Practitioner course included in the list of Continuing Education Fund Reimbursable Courses  in Hong Kong. Before a course can be granted this funding, it has to be  thoroughly assessed by the Hong Kong Council for Academic Accreditation on its training contents, qualifications and experience of trainer so as to ensure  quality.


Tommy believes that everyone has the resources to achieve their desired dreams and everyone can be a genius in their unique area of excellence.


Tommy's Core Transformation Seminars are conducted in the Cantonese and Putonghua language.


Contact Tommy Doo:

info [at]



Matt Greenshields, B.Sc. is an NLP Master Practitioner and Hypnotherapist and has been involved in human development since 2000 with meditation practice and teaching. He went on to qualify in Hypnotherapy, Integrative Psychotherapy and NLP and was licensed to train Core Transformation in 2012.


He works with his wife, Angela Merino providing coaching, therapy and counselling, and leading Core Transformation trainings and practice days in London, England. His transpersonal approach has grown out of study of meditation and eastern psychology, making Core Transformation one of his preferred methods.


Matt worked in robotics research, software development and management before changing career in 2003. He is interested in languages and cultural development and enjoys travelling.


Contact Matt Greenshields:

+44 7810 647641 (London, England)

matt [at]



Armand Kruger
qualified as a clinical psychologist at the University of Pretoria in 1972. He is an international trainer in NLP (Neuro-Linguistic Programming).

Armand's NLP career started with his practitioner training with Steve and Connirae Andreas in 1985. He did Master Practitioner's training with Ed and Maryann Reese, John Grinder, and some personal training with Leslie Cameron-Bandler. After doing the extended trainer training with Ed and Maryann Armand qualified as an Nlp Trainer in 1987.

Armand has taught NLP (with Ed and Maryann in Switzerland, Austria, USA, and in Zimbabwe. His NLP-career started in 1983. In 1987 he became the first internationally qualified NLP-trainer in South Africa. In the same year (1987) he trained the first South African, internationally recognised, NLP-practitioners.

His passion for NLP as an approach and preferred method for facilitating change is as strong as the first time he entered the training with Steve and Connirae in 1985.

Contact Armand Kruger:
armand [at]



Diane Bélanger's
Bio coming soon!

Contact Diane Bélanger:
info [at]


Andrew Austin

Contact at:
Andy Austin's Core Transformation Page


Core Transformation Trainers Association Trainer List: (Endorsed Trainers)

This is the complete list of Trainers who are members of the Core Transformation Trainers Association.

Core Transformation Trainers: Both Licensed & Endorsed Trainers

Here you'll find all Core Transformation Trainers, both those licensed to use the Trainer Materials Packet, and those who are members of the CTTA.









Core Transformation International Trainers Association
1221 Left Hand Canyon Dr
Boulder, CO 80302

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