Half-the-time is all-the-time.
Complementarity is the basis for everything. This explains why people can only get along half-the-time. It also explains why half-the-time is all-the-time.
Meaning, it is impossible to exist without enemies. Complementarity is dependent on the enemy. So, best to make your enemies friends. Plan your strategy for dealing with enemies, way ahead of the time, when you are forced to deal with enemies. Remember, you will be viewed as an enemy, half-the-time, yourself. (You are dealing with the enemy within your self.)