You may have someone do you harm by being dishonest, lying to you, or talking negatively behind your back. Sadly, it happens often and likely far more than one thinks, especially in many workplaces. Unfortunately, when one is unaware of the words or actions, they go unnoticed.
When we know of the wrongdoing, that is ultimately when we show our mettle. We may want to retaliate and inflict similar harm, but to what avail. By doing so, all we have done is stoop to the level of the individual and prove to be as they are.
If they have done wrong, by us doing wrong, regardless of one’s justification, merely validates their behaviors. Further, the anger will manifest itself, harming you only to be followed by an added complication.
It may just heed us just to do what is right and remain even-keeled. After all, who dislikes a kind person, regardless.