Reviews

Read the inspiring experiences of our clients.
Marcel is always well prepared and continuously working to improve himself and his methods/website. Marcel is sincere, flexible, and takes the time for you.
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Roy Peters

Teamleader
The Reiki treatment was very relaxing. Marcel takes all the time you need and has a calm presence. A knowledgeable professional who truly pays attention to you as a person.
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Karin Visser

Foot care specialist
I followed an Inner Strength program with Marcel. The explanations were very clearly supported and well-founded. Marcel is friendly and professional. He listens and applies what he hears. It was educational, and I’ve taken another small step toward further recovery.



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Suzanne Vis

Bookkeeper / Self-employed
From the moment Marcel walked in, I immediately noticed his strength and his uniquely clear perspective. He delivered a masterclass for us that made an unforgettable impression. Through clear explanations, effective exercises, and the safe, inspiring space Marcel creates, everyone in the group experienced something of the magic of this method — in a way they can apply every day..



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Conny van Rooij

Location Manager

II find it valuable how insights become tangible. They come alive within you, which is why they stay with you.




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Iris van Sambeek 

Psychologist
My first experience with NLP — a very positive experience in which I learned a lot and my interest in coaching and guiding others was sparked. I’m sure I will take this experience with me in my career and that I will enjoy it a lot.


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Pauline Sterenborg 

Dentist
Because I wanted to connect more with my inner ‘self’, I decided to join the Psychology & Spirituality workshop. During the workshop, we were guided step by step through various topics over four evenings — each time a little deeper inward, and eventually back ‘outward’ again. After the workshop, I definitely felt more connected with my inner ‘self’, and I had several practical tools I could continue working with on my own. I also really appreciated the online platform where I can log in to go through the presentations and exercises again.
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Jamie-Lee Middag 

Entrepreneurial Marketer
Very calming trainer. Everything explained clearly. End of the workshop: relaxation!







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Arènda Melsen

Participant — Family Constellations Workshop
It was my first time and I found the experience very special. The atmosphere was good and everything was explained calmly and clearly. I also now understand more about how a family constellation works. The guidance was good. I found it a special afternoon.
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Monique Kloosterhuis

Participant - Family Constellations Workshop
I found it a fun and very interesting program. Openness and honesty were central, which meant we could share our findings and experiences well.

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Jan-Hein Miessner

Advisor to the Harbourmaster
A vvery knowledgeable trainer.







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Belinda Sunnotel

Order Coordinator
A warm welcome and a very special experience that I’m truly grateful for!







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Angelique den Haan

Client - Reiki Treatment
In 2021 I started an NLP training and Professional Communication. What a special program — the insights, the discoveries about yourself, and the way the course material is presented. Marcel is also a lovely person: driven, respectful, and incredibly kind. The learning goals I set are already taking shape. That’s why I also look back on myself with pride. Marcel, thank you for your inspiration, knowledge, and skill.
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Ina van den Wijngaard

Coach
An inspiring training with many fruitful discussions.





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Begum Erten Uymaz

Clinical Psychologist
ISEMI delivers the quality we asked for. Through open and honest communication, we achieved the intended objectives.

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Richard Visser 

Project Manager
The ISEMI workshop offers both an introduction to the theory and a very direct personal experience in one day. It’s surprising how much you can learn in a short time.
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Erica Zwaan

Trainer
These three days really flew by! A very fascinating and inspiring training — thanks to the enthusiastic trainer Marcel..
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Ingrid Verhoeff

Vitality Coach
Fun, educational days. I learned a lot!

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Joris van Gorp 

Instructor
A particularly pleasant way of being taught, with plenty of room for your own questions and personal topics.

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Mathijs Lammerts

Port Operations / Tidal Window Calculator
Marcel helped me bring structure and calm into my (job interview) conversations. He helped me make the best possible use of my own professional expertise.

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Stefan v.d. G.

Pilot
The knowledge and expertise of ISEMI — meaning Marcel — have led to the security professional I am today. Many important topics were highlighted that matter in today’s day-to-day work. A rich experience in my life.
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Simon van der Wal

Recognized Securitry Manager
Complex material explained in a clear way.


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Heidi Giezen 

Teamleader
Good course, to the point, small group, lots of customization.


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Jan Oudman

Engineer
Marcel is someone with a lot of experience in the field of security. He simply stays himself. Over the years, he has also grown in his work. I have a lot of appreciation for his work.
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Henk Til 

Security Officer