Power is "the measure of the degree of control you have over circumstances in your life and the actions of the people around you," Greene tells Business Insider. [...] you have more to fear from friends than from enemies. Keep people off-balance and in the dark by never revealing the purpose behind your actions. Science says these 9 tactics will help you win any argument6 habits of the most likable peopleHere's the best way to make friends when you're a grown-up