I am Paul
I built Metron because an increasing number of wealth holders feel a certain level of dissatisfaction. The world feels like a much more complicated place than even just 10 or 20 years ago.
I am helping you to live in alignment with your values, tailored to your specific circumstances, and calibrated for the reality we are all sharing.
Where I come from
I grew up hypersensitive to how people around me feel, which from early childhood instilled an urge to help others. Over time I expanded that ambition from helping family, friends, and neighbours to making the world a better place for everyone.
I spent three years at McKinsey & Company working on corporate sustainability and social impact, where I developed the analytical rigour and advisee-management skills the work requires. I then joined Regeneration Group as COO, where I worked directly with UHNW advisees on exactly this interface: values, wealth, and impact. Over my seven years in the field, I co-authored the Theory of Wealth framework with Regeneration Group and the Ownership Project at Saïd Business School, University of Oxford, and the Influence for Good report with Ashoka, McKinsey, and others.
My academic background spans various disciplines that in their own right are trying to make sense of world and reality. I hold an MSc in Physics, an MA in Philosophy, and a certificate in Positive Psychology.
I am based in Berlin, Germany and work with advisees across Europe, the US, and beyond, travelling to wherever the engagement is best held.
What you can expect from working with me
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I will tell you what I actually think, including when it is uncomfortable. What you hear from me is what I believe, not what I think you want to hear.
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The inner work this engagement involves needs space free of judgment. What surfaces is met with care, openness, and curiosity.
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Trained as a philosopher and physicist, four years at McKinsey. Identifying and instilling patterns where there is messiness is my superpower. I will bring rigour to complex decisions and turn ambiguity into legible structure, without losing what matters.
Recent publications
Beyond the Preserve and Grow Paradigm: Developing a Theory of Wealth
Kustin, B., Ziesche, P., & Efromovich, S. (2025). Beyond the preserve and grow paradigm: developing a theory of wealth (pp. 1–32). Ownership Project 2.0, Skoll Centre, Saïd Business School, University of Oxford.
The paper proposes a structural alternative to the prevailing wealth management norm, offering wealth holders a vocabulary for what their wealth is actually for. It is the intellectual foundation of Metron's approach.
Influence for good - How highly resourced individuals could work towards positive systemic change
Mühlenbein, O., Rutsch, F., Bodem-Schrötgens, J., & Ziesche, P. (2022). Influence for good – How highly resourced individuals could work towards positive systemic change. Ashoka, McKinsey & Company, et al.
The report introduces the polycapital framework: the idea that wealth holders bring more than just financial capital, and that career, social, and political capital can be coordinated for systemic impact.