He studied at Stanford and Harvard. He regularly teaches at many prestigious universities, including Stanford and London Business School, and author of books on sales strategy and price management. He has worked in more than 50 countries of the world for the largest global corporations and small and medium-sized companies.

Doctor, specialist in pediatrics, graduate of the Medical University of Warsaw. He practices evidence-based medicine (Evidence Based Medicine). His clinical and scientific interests revolve around the broadly understood health prevention.