Mark Tigchelaar

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.

Ebooks

Focus On-Off: Fuel Your Attention, Get More Done

Focus Off/On: Die 4 größten Konzentrationskiller besiegen – mehr erreichen in einer Welt voller Ablenkungen

Foco: Liga/desliga: Dicas da neuropsicologia para concentrar sua atenção no que realmente importa e se desconectar de tudo quando necessário

Focus On/Off: La guía científica que te ayudará a mejorar tu concentración y rendir más

Focus On-Off : Restez concentré pendant que le monde perd la tête