JASPER STEFFENS
ENTREPRENEUR AND INVESTOR
"In-to-depth knowledge how the brain of ‘us humans’ functions, is the best present you can share with yourself and your loved ones at any age. I sincerely hope that the valuable and precious content of this book and the ever lasting motivation of Marcel and Eddie to continue to bring their knowledge into the world, will help you and many to follow in improving your personal life, your business opportunities and your circle of close friends. Teach your brain to look for the causative side instead of the resultant side".