Sustainable lifestyles

A sustainable lifestyle applies the concept of sustainable development to all personal lifestyle choices and decisions. Sustainable development is defined as “development that meets the needs of the present without compromising the ability of future generations to meet their own needs.” World Commission on Environment and Development’s (the Brundtland Commission) report Our Common Future (Oxford: Oxford University Press, 1987).

In practice this means that we minimize our ecological footprint by using our bikes instead of a car, eating mostly vegetarian, saving energy and using renewable resources, while minimizing our amount of household waste through repair, re-use and recycling of material.

While working on our own lifestyle we offer the following to our partners and clients:

  • Support for sustainable lifestyle actions, campaigns and/or project ‘treevelopment’;
  • Personal and organisational coaching and development support, based on Spiral Dynamics Integral, ECOtherapy or lightwork.


In recent years Christy Duijvelaar and Giel Verbeeck have developed and provided:

  • Internships and traineeships for MSc students;
  • Workshops & coaching based on Spiral Dynamics Integral, including on-line tests and personal assessments;
  • Courses on effective personal leadership;
  • Support to change processes and management capacity building in a variety of project teams and NGOs;
  • Balancing of the personal and professional life through energy work and ECOtherapy.