We can see around us that some people are always able to sway or motivate other people's behavior, no matter if it's in enterprise management, team leading or family planning. This is the power of influence. This book, "Influencer: The New Science of Leading Change," reveals the principles and skills employed by many successful influencers. It deciphers influence from several aspects covering methodology, strategy and practice. The aim is to provide a set of tools to help readers identify the keys to become an influencer.