In another topic, you recommended People Smarts by Tony Allesandra and I ordered it. I later found out there were three different books from the same author and they all seem similar. I ordered the second one - it's what came up when I searched for "people smarts" - and I wanted to confirm that's the one you were referring to. It may not matter; perhaps these are three different writings on the same topic/principle.
Here are the three books by Tony Allesandra:
Winning With People : Discover the People Principles that Work for You Every Time
People Smarts - Bending the Golden Rule to Give Others What They Want
People Smart: Powerful Techniques for Turning Every Encounter into a Mutual Win