Decision making

How do people make decisions on the spot? Past experience? Thinking on their feet? Too many variables, not enough guidance. Perhaps the solution to this problem is to first consider the objectives.
Define a goal to aim for in every encounter and use it as a handrail for every step you take. That way you are not treading blindly into the dark.
Have priorities. Don't be too flexible. There is a time and place for everything. Keep records, write things down.
End incoherent advice to self.