Accepting people as they are. I haven’t found anything more powerful when it comes to interacting with people. I worked my way through personality types, influence, negotiations and a bunch of other so called soft skills.
Wholehearted acceptance of people; their motivations and fears; their habits and aspirations. When I am able to exercise this superpower (which does not happen often), I am able to open them up and change their trajectory. And in process, I myself learn and grow.