For empowering your analysis, you'd need to have knowledge and information from 2 completely separate points of views:
- Values, motivations, weaknesses, opportunities, desires, laws, needs, goals and analysis of the situation wrt your own point of view
- Values, motivations, weaknesses, opportunities, desires, laws, needs, goals and analysis of the situation wrt the other party point of view
The first point of view is natural and almost everyone can do that by default; it's like a chess game that you see your own movements and opportunities easily. People whose decisions are solely based on this point of view are often the ones who loose the game.
The second point of view if not more important it is as important to help you make the bes decision. It requires extra effort and perhaps wisdom to forget yourself completely and see the world from the counterparty point of view. It's like a chess game that you must analyse the opportunities and weaknesses of the couterparty as well to be able to make your best decision.
In this way, you always WIN and Make The Best Possible Decision Easily :)