We live in a society where we share more and more: news, rides, apartments. Only leadership seems indivisible. However, this notion has long been an illusion: we share leadership without even realizing it. What is lacking are clear rules of the game, the appropriate infrastructure, and the necessary competencies. Leadership needs to be rethought. No one can tackle the challenges of economic upheaval alone - not even a boss. Everyone must lead and everyone must follow - and everyone must know when what is appropriate. This book provides a roadmap for recognizing, understanding, and shaping the necessary changes. It offers suggestions on how we can master leadership together. It encourages us to leverage the significant technological and societal changes to make companies more successful and ourselves more satisfied.