John is best-known as a professional speaker and coach. He supports professionals to develop a strong career identity, rooted in self-worth and self-belief. In this way, professionals increase the value of their work, find fresh energy and sustainable motivation. Even in tough times. His latest book, “The Self-Worth Safari” was published in March 2019. John is also the author of "Hidden Value" , "100 Tips to Find Time" , "Opportunity Conversations”, and "The Courage to Ask”.