“The curious paradox is that when I accept myself just as I am, then I can change.” Carl Rogers

Mariette Ham Qualifications and Experience

Mariette is a catalyst for change and specialized in tackling habitual thinking, feeling and doing. She invites people to step out of limiting mindsets that don’t serve them anymore.

The early years 1978-2003

After her university study in change management, Mariette was a counsellor for more than 20 years in (Adult) Continuing Education. She also designed effective learning environments (up to university level). 

Business / Organizations 

In 2003 Mariette made a career switch to address the needs of professionals in a business environment. She is serving clients like Siemens, Belgacom, RDBM, Fortis Real Estate, Alcatel-Lucent, Bayer, Lotus, Rabo, TeleAtlas/TomTom, Nutricia, AstraZeneca, Unilever

Expertise: (personal) leadership, self-organization and performance, communication, responsibility, adaptability to change, collaboration, delivering results, customer satisfaction. 

With this business background, Mariette has a result-driven approach. 

Deep Transformational Change: 2013 

Currently Mariette teaches the PSYCH-K® belief change processes around the world (e.g. USA, Belgium, Netherlands, Italy, Germany, Turkey, Poland, Vietnam…). It is her passion to enable peope to use these surprisingly simple yet powerful transformational processes and be the true creators of their life. 

Contact Mariette (at: contact@changingyourbeliefs.com) for a private consultation (in person and via Skype) or attend a workshop to learn these processes (self-coaching). 

Especially professional coaches and therapists benefit from PSYCH-K as a valuable add-on to their expertise.

Mariette has extensive competences and thousands of hours of experience in transformation and behavioral change.
She is comfortable with anything you want to transform, from leadership and work related issues to personal, relational or health issues

There is not one modality that serves all. Mariette uses a variety of growth oriented methods.

Mariette’s Expertise in Keywords:

PSYCH-K, Adult Education, Core Qualities (D. Ofman), Management Drives, Spiral Dynamics, Non-Violent Communication (M. Rosenberg), Solution Focused Coaching (NOAM, C. Visser en G. Schlundt Bodien) , Systemic Organizational Constellations (J.B. Schmidt;  M. Varga von Kibéd), The Skilled Facilitator Approach (R. Schwartz), Facilitating Group Participation & Team Effectiveness (J. Campbell, ICA Brussels), Appreciative Inquiry (David Cooperrider), Open Space (Harrison Owen), Personal Efficiency & Effectiveness (CiEP), Transactional Analysis (A.Wuyts), Brain friendly Learning (K. Hare) , Tai Chi, TAO-Relax, Coaching (various), Facilitating Change (Andragogics, Nijmegen University)

Mariette Ham - PSYCH-K International Instructor









I’m thankful for my strunggle because without it I wouldn’t have stumbled across my strength.




My life took a complete turnaround as I first got into contact with PSYCH-K and I experienced the changes on myself. I immediately realized what a great too I had in my hands to help other people overcome lifetime challenges.


Consultant for PEP

My coaching career took another important turn when I completed my coaching knowledge and experience with training groups of people to improve their efficiency inside companies.



My coaching career started for me in 2018 when I found a real urge to help people develop in better ways in their business life.