Create your success. 

Our clients



Atheneum College Hageveld

Erasmus Center for Women in Leadership (ECWO)

Erasmus Medical Center


VISA Europe

KPMG (preferred supplier of coaching)



ABN AMRO (preferred supplier of coaching)

Forbo Flooring


Liberty Global

NS Finance

The Discovery Company

Our Participants Speak

Testimonials Business Individuals

De Keystone training heeft mij een mooie spiegel voorgehouden en mij geleerd dat ik mijn werk met veel meer plezier kan beleven. De training is erg afwisselend en zou van mij nog wel meer dan die ene dag mogen duren. Een sterk team dat elkaar op geweldige wijze aanvult en mij in mijn kracht heeft weten te zetten. ing. John Wisse RA partner/gevolmachtigde Deloitte Audit Regio
Fijne trainers, inspirerende gastspreker, vele inzichten over vitaliteit en uitgebreid werkboekje, je krijgt zin om met je vitaliteit aan de slag te gaan! Groet Maaike de Haan, Deloitte Health Manager
“Getting trained by Mary Jane and Pauline of KEYSTONE success really challenged me to consider my vitality across different dimensions. I received practical tools to both recognize and improve my vitality in these areas. The no-nonsense approach and interactivity of the training, combined with some physical exercises, really helped to not only understand the importance of vitality, but also to experience how small changes and activities can help reduce the stress level and to improve a sense of wellbeing.” Freddy Holwerda, Deloitte

“A really fine training. I’m ready to take action on what I’ve learned.” Mgr. Global ‘Big Four’ Firm

“This would be useful for everyone at every level. A very good training. I’m curious as to how we will all put it in practice.” Mgr. Global ‘Big Four’ Firm

“The training comprises various engaging and sometimes also personal information from the trainers. Valuable, handy, short exercises with which you can maintain your vitality are shared. The exercises can even be done at work! In this time, wherein much is expected of us in our work lives, it’s important to maintain our vitality. Are you often busy? Then I recommend this training.” M. van Langen MSc, Feedback trainer, University docent communication and drama

Testimonials Business Teams

“Tx for arranging the great workshop for our department, I definitely notice the difference in the mood and mindset of the people.” Kind regards, Fleur

“This information was exactly what I/we needed and will really help to raise the energy levels once again.” Team-building training, a Global ‘Big Four' Firm

“ Our team of ten recently attended the Recovery + Renewal = Resiliency workshop hosted by Mary Jane and Pauline of KEYSTONE success, together with Melissa Raczak of Deloitte. The three ladies shared their areas of expertise with us and facilitated an environment for us to share our experiences. Mary Jane explained the immediate and long term effects of stress on the body and allowed us to use biofeedback fingertip sensors to measure our stress levels. Melissa gave a personal testimony on stress, managing work/life balance, and goal setting. Pauline provided an introduction to mindful meditation, and resources for keeping up our practice after the session. We also individually completed an online Vitality Check, and discussed the results during the workshop. Our team not only received valuable information on managing stress, but was also able to share our own improvement areas and goals and celebrate individual and team strengths. I have already seen changes in our ways of working together and progress towards our personal goals. Thank you again for an engaging session! Lisa Mathiak, Manager Financial Controls Compliance Liberty Global

“I just wanted to drop you all a note to say thank you again for the opportunity to observe and participate in your wonderful course “Keystones 4 Vitality." It was a powerful and practical learning experience, and I can’t think of anyone in our company who wouldn't benefit from it. In my view, what makes it so valuable is the way you engage the mind, heart and body by 1) grounding the subject it in science, research and the reality of the practitioners, and 2) leading participants through the experience of trying out the tools and techniques so they ‘feel’ the difference between stress and recovery from stress by the end of the day.” SW, L& D Manager for a Global 'Big Four' Firm 

“Through my function, I was offered the “Keystones 4 Vitality" training. This training was provided by Pauline van der Lee, Mary Jane Roy and Melissa Raczak. I experienced this training as inspirational. It was an eye opener compared to earlier followed trainings within the company. It is a training that would be valuable for many colleagues. I received a number of tips and tricks to bring and keep body and mind in balance. I want to thank you all of you for what you have shared with us as a group.” Audit Manager Global ‘Big Four’ Firm