Start with why by Simon Inek
Why are some people and organizations more innovative, more influential, and more profitable than others? Why do some command greater loyalty from customers and employees alike? Even among the successful, why are so few able to repeat their success over and over?
People like Martin Luther King Jr., Steve Jobs, and the Wright Brothers might have little in common, but they all started with why. It was their natural ability to start with why that enabled them to inspire those around them and to achieve remarkable things.