If you want to ‘change lives, change organizations, change the world,’ the Stanford business school’s motto, you need power.Is power the last dirty secret or the secret to success? Both. While power carries some negative connotations, power is a tool that can be used for good or evil. Don’t blame the tool for how some people used it.Rooted firmly in social science research, Pfeffer’s 7 rules provide a manual for increasing your ability to get things done, including increasing the positive effects of your job performance.