About
A Journey of Healing, Growth, and Empowerment for All
Core Transformation® is a groundbreaking method that empowers individuals and professionals to create deep, lasting change. By gently addressing the root causes of inner challenges, this process transforms them into sources of strength, clarity, and peace. With decades of proven success, our approach has helped thousands worldwide find balance, heal emotional wounds, and achieve their fullest potential.

Our story
From One Spark to a Global Transformation Movement
Evolving from a single life-changing experience in 1979, Core Transformation has grown into a research-backed method empowering thousands worldwide to access deep peace, clarity, and wholeness daily.
1979 • September
A Life-Changing Moment — Milton Erickson Insight
Connirae experiences a spontaneous state of profound peace during a session with Milton Erickson, proving deep, natural transformation is possible personally.
1989 • April
Method Emerges — Client Work Breakthrough Guided by curiosity
Connirae crafts a 10-step questioning process that reliably brings clients into the same core states of wellbeing.
1990 • June
First Training Debut — NLP Professionals
The inaugural Core Transformation workshop is presented to seasoned NLP practitioners, confirming the model’s effectiveness across diverse issues and learning styles.
1994 • March
Book Release — Translated Into Many Languages
Connirae and Tamara write the seminal guidebook Core Transformation: Reaching The Wellspring Within, making the method accessible worldwide and sparking translations into eighteen languages within five years.
2019 • October
First RCT Study — Peer-Reviewed Evidence
A randomized controlled trial demonstrates significant reductions in anxiety and depression after a single Core Transformation session, providing scientific validation and attracting interest from healthcare researchers globally.
2020 • January
Certification Launch — Coach Pathway Opens
Comprehensive live-online curriculum enables practitioners to gain mastery, mentorship, and official endorsement to guide others through Core Transformation safely and effectively.
Today
Worldwide Impact — Used Across Disciplines
Therapists, coaches, educators, and organizations on six continents apply Core Transformation daily to foster resilience, compassion, and authentic leadership in individuals and teams.
The research
Core Transformation® Research
Core Transformation already has significant published research behind it, with more on the way. Here is a summary of the publications and the results, including the studies not yet published.
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About
The trainers

Tamara Andreas
Tamara Andreas is an international transformational seminar leader and co-author of the book, Core Transformation: Reaching the Wellspring Within, and the Core Transformation Training Manual. She has been bringing the Core Transformation work to people around the world for over two decades, and has been the lead trainer for this process and for the Wholeness Work trainings in Asia. She has used Core Transformation in depth in her own life, which enriches what she offers in both trainings and private coaching sessions. Since 2007, Tamara has been offering in-depth Core Transformation Trainings in Japan, where she now teaches a customized training series and mentors a growing group of members of the Japan Core Transformation Trainer’s Association.
People trust Tamara’s adept skill in creating safety and clarity through which to explore their own transformations. Her heartfelt and gentle style, along with her mastery of the material, make her a well-loved and effective Trainer. Tamara makes presentations tailored for business groups, health professionals and educators. She lives and works with her husband and son in Colorado.

Mark Andreas
Mark has taught Core Transformation in five states and seven countries, having traveled as far as India, Russia, Romania, the Netherlands, Portugal, and Canada to teach Core Transformation. Mark is the co-designer and co-trainer of the Core Transformation Coach Certification Training (along with Tamara Andreas). He has led multiple research trials in Core Transformation, including several randomized controlled trials. This research shows the effectiveness of Core Transformation as guided by coaches in the Andreas’ Core Transformation Coach Certification training. Mark is also a personal transformation coach, meeting over Zoom using Core Transformation, Metaphors of Movement, Wholeness Work, NLP, and other methods. With this wide range of tools, Core Transformation remains the single method he has used the most over the last fifteen years, both with himself, and with clients—because of it’s profound effectiveness and ease of application to a wide range of life issues. Visit www.markandreas.com for more details.
Mark is author of the book "Sweet Fruit From The Bitter Tree: 61 Stories Of Creative And Compassionate Ways Out Of Conflict," endorsed by Dan Millman and William Ury, and "Waltzing with Wolverines: Finding Connection and Cooperation with Troubled Teens," based on his experience working for a Wilderness Therapy company in CO.
Testimonials
Real stories of profound change from CT training participants





"I had such an amazing healing in the Core Transformation Foundation course. I'm in my body now. Most of my life I was dissociated and didn't even know it! It's helped me so much. I have been a seeker for so long, and I’m finally getting a handle on how to help myself. After the seminar, I've continued to use CT as an individual practice, and I will continue to use CT. You do such great work, I hope you keep it up!"
Vicky





"I am a walking testimonial of how CT can help. Even after 10 years of grief over the loss of my husband, and running away from it by being a workaholic. After that I was burned out and depressed. Then I tried therapy for three years…. But it’s only after practicing Core Transformation that I found true relief. I could get married again, and now, as I continue using it, I am becoming more balanced day by day. That is the reason why I am so strongly convinced about CT and that’s why I want more people to know about it. Therefore I decided to go through all level of trainings with Andreas NLP."
Nell Puetter
Core Transformation Certified Coach





"I am still shocked by how deeply I can breathe. This shift feels like going from a gulp to a gallon. I had no idea how constricted my breathing had become until today when I feel I can breathe in forever. Thank you to my peer, and to Core Transformation. I am truly honored to be here, learning to be a better coach."
Ahulani McAdam





"Core Transformation was an incredibly supportive tool that helped me through the everyday stress and sadness of dealing with and witnessing my father’s declining health (he is 94). It’s such a powerful and yet so incredibly gentle and supportive way to work. I don’t exaggerate when I say that I feel grateful every day for having CT at my fingertips."
Åsa Firth, Sweden





"Participating in the Core Transformation Coach Certification is a PROFOUND experience on all levels one could imagine; the cognitive level in congruence with the somatic level of "knowingness," the subtlety of transformative language leading to emotional relief and incredibly sustainable shifts in "state" and for some, deep shifts in awareness and consciousness. Huge congratulations to all graduates and participants, gratitude to Mark and Tamara who are Trainers par excellence, and of course to Connirae for creating this particular Path to "the Wellspring Within.”"
Michael DeMolina, PhD
Core Transformation Certified Coach & Trainer, CT Training Mentor





“This was an amazing journey and life changing deep experiences! Many thanks for sharing your talents with the world Tamara Andreas Connirae Andreas Mark Andreas all my mentors and practice group peers.”
Nell Puetter
Core Transformation Certified Coach





"This has been a unique journey with an amazing group of people. Connirae Andreas, Tamara Andreas and Mark Andreas have been superb guides - deeply compassionate, intensely committed, and incredibly insightful & skilled trainers. Much gratitude to you, and to the other mentors and participants who have made this such a fulfilling journey."
Dinesh B
Certified Core Transformation Coach, CT Certification Training Mentor, CT Researcher





“I'm blessed to be a part of this group of coaches. Core Transformation has changed my life and I can see the profound effect it has with my clients.
"Congratulations to all my fellow coaches, and much gratitude and love to Tamara, Mark, and Connirae!”
Rory Olsen
Certified Core Transformation Coach





"The Core Transformation Coach Certification has been an incredible journey on every level. Learning alongside such kind-hearted and talented people made the experience truly special. The practice, mentorship, and deep self-reflection have not only strengthened my coaching skills but also profoundly impacted my relationships—including the one with myself. I’m so grateful for the gift of Core Transformation!"
Camilla Lloyd Moore
Certified Core Transformation Coach

Blog
Learn more about us
Core Transformation Research: First Randomized Controlled Trial Published in Peer-Reviewed Journal
We are pleased that the first randomized, controlled study on Core Transformation has been published in a […]
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Sample Case Study
Lynn had struggled with her weight for as long as she could remember. It had […]
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International Research: Core Transformation Results Across Six Continents
From Panic to Peace: Elena’s One-Session Turnaround Elena, a 32-year-old UX designer, spent years haunted […]
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