Yes, POWER.
As true power is “the capacity for effect” (if it is not effective, it is not powerful); listening and communicating well makes you more effective as a human being at everything, even when to keep one’s mouth shut!
Better relationships, higher quality personal and professional conversations, are only beginnings.
Do not be one of these people who only think in terms of the utility of others. Being a charming douche isn’t an “improvement”. Listening and communicating well are a qualitative human skill, not just “useful.”