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Guerrilla Change

Unconventional experiments that create momentum when change gets stuck.

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You have the plans. You have the buy-in. And still, nothing moves.


Guerrilla Change is for people leading change from within - and seeing every day how it gets trapped in plans, reports, and good intentions. Not because people resist change, but because organizations are weighed down by bureaucracy and work that may once have made sense but now mainly slows things down.


Guerrilla Change works around heavy systems - through small, unconventional actions that get change moving again.


Three enemies stand in the way:


  1. The Rule Mafia - rules and meetings that once served a purpose but no longer add value today. Time to cut what slows things down.

  2. The Yes-But Brigade - voices that keep pulling your attention toward the 10% who will never come along. Stop watering the desert. Focus on the places where it’s already working.

  3. The Doubt General - the voice in your head waiting for permission. The antidote: small experiments, local action, and the confidence that momentum starts with doing - not with knowing.


No grand theory. No step-by-step framework. Just sharp insights, unexpected examples, and the energy to actually get things moving.

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For more than 20 years, Cyriel Kortleven has been inspiring organisations like IKEA, NASA and Unilever to approach Change with courage, confidence and enthusiasm. His pragmatic advice has earned him the nickname The Simplifier. In an increasingly complex world, we need new simple perspectives to enable us to navigate uncertainty and to turn problems into opportunities.

Be ready for practical tips & tools to help you as a leader drive behavioural change. Your audience will be armed with new language and a boost of energy to transform the fear of change into a positive attitude towards the goals you want to achieve. Cyriel uses interaction and humour to create a context where people think and feel differently to reignite their appetite for creativity, taking risks and achieving ambitious results. More than 350 recommendations on Linkedin are proof of his track record of satisfied clients. Don’t mind the change. Change your Mind.

Cyriel Kortleven

Making Change Simple

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