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In 'Mastering Performance', Jeroen Hertzberger, the all-time top scorer of the Dutch Hoofdklasse and the Euro Hockey League, takes you on his personal journey filled with life lessons from over 20 years of top-level sports. Driven by an unmatched mindset, discipline, and unstoppable passion, he became one of the most successful hockey players in the Netherlands. His success does not lie in physical strength but in thinking differently and acting smart—both on and off the field.