When you deal with people At the deepest level, you're on your own. You must learn your nature, and the natures of the entities around you, to know to what extent they can be values. You must devise methods to use them to serve your life, to make them your values. Morality is at root personal, not social, It is the master method you need to live in reality, i.e., among the entities around you. You'd need it as much on a desert island as among other men.
Men are the most important entities in every landscape.
No other kind of entity has nearly the same power for your good or evil. You need a method to use other men to serve your life, to make them your values. I expect this will raise hackles. Love is a response to values. The method you seek, like all methods, must be based on the nature of the entity you're dealing with.