When managing in the wilderness of changing times, a map is of limited worth. What's needed is a moral compass. Once, when I was in New York, I witnessed a mugging skillfully executed by a street gang. They lacked an internal moral compass.
Principles are like a compass.
A compass has a true north that is objective and external, that reflects natural laws or principles, as opposed to values which are subjective and internal. We can only break ourselves against the law. Principles are proven, enduring guidelines for human conduct. Certain principles govern human effectiveness. These are not difficult to detect.