Ikigai: the Japanese secret to a long and happy life. By Hector Carcia and Fancesc Miralles
Perhaps the most famous things that got out of this book is the diagram of Ikigai: which simply states that we find our purpose in middle of four things: What we are good at, what we love, what the world needs, and what we can be paid for. It’s a perfect system of what value we offer to the world and what we get in return, while maximizing the benefits from both ends. We maximize our self-interests and pleasure by doing what we love and what we can be paid for, while the rest of the world gets something that it needs and is of quality (because we are good at doing what we do).