Mark Tigchelaar

About The Author

Mark Tigchelaar studied psychology and specialized in improving performance and optimizing the use of the brain. He coaches entrepreneurs and athletes to improve their achievements.

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Books by Mark Tigchelaar

Focus On-Off

By Oscar de Bos and Mark Tigchelaar

The international publishing phenomenon that teaches you how to be more productive and recharge your brain in a world that seems designed to distract you at every turn.

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LIST PRICE: AU$ 36.99 / NZ$ 41.99

PRICE MAY VARY BY RETAILER