There are many sellers who are very successful, even though they disregard the rules of sales rhetoric. What makes them so successful? They convince through originality and their credibility – they are authentic. This is innate to all of us but is often buried under various influences in life. When sellers manage to regain their authenticity, they become more successful. The individual core of their personality then comes to the forefront. In the book by Hans Vialon and Göran Hajek, sellers learn how to achieve this. The authors also explain what authenticity entails and why it is irreplaceable in sales for gaining customer trust. They provide deep psychological insights that help sellers identify and gradually resolve their internal bottlenecks for sales success. Checklists and exercises assist in this process.