“Lord, protect me from my friends; I can take care of my enemies.”
Here we are again… Nothing is guaranteed in life, and even the closest of friends can become the worst of enemies. The problem is that we often do not know our friends as well as we imagine. Ingratitude has a long and well-known history. The more favors we supply to strengthen the friendship, the less gratitude we might receive. It is generally better not to mix work with friendship. We might discover unpleasant qualities.
On the other hand, an enemy sharpens our wits, keeping us focused and alert. We must try to cooperate with our enemies, and learn to work with them if they are skilled and competent. We can turn around an enemy and make a friend of him if we find mutual interests.