Consult your resentment. It’s a revelatory emotion, for all its pathology. It’s part of an evil triad: arrogance, deceit, and resentment. Nothing causes more harm than this underworld Trinity.

Anger, which purges resentment.

So anger helps us defend threatened territory — it is just, and it is honest. Not only that — it is healthy. It is widely believed that bottling up anger can kill us, slowly and in three different ways.

Holding anger is a poison. It eats you from inside. We think that hating is a weapon that attacks the person who harmed us. But hatred is a curved blade. And the harm we do, we do to ourselves.

In relations with others, one should express resentment and anger openly and straightforwardly. If one cannot express them openly and straightforwardly, the only thing to do is forget about them. To harbor grievances in one's heart, awaiting some later opportunity to give vent to them, is to act like a weak and petty man-in truth, it can only be called cowardice. The mind of the superior man is like Heaven. When it is resentful or angry, it thunders forth its indignation. But once having loosed its feelings, it is like a sunny day with a clear sky: within the heart there remains not the trace of a cloud. Such is the beauty of true manliness.

Anger is an acid that can do more harm to the vessel in which it is stored than to anything on which it is poured.

Holding anger is a poison. It eats you from inside.

If you have resentment in your heart, you’ve only got yourself to blame. If you could understand it’s not any outside thing but your own attachment or greed that causes the resentment in the first place, you would be able to let go of the emotion. If you have time to be angry, you might as well use that time to do something good for society, right?

Scores of studies have shown that venting doesn't soothe anger; it fuels it.

Resentment is the feeling of frustration, judgment, anger, “better than,” and/ or hidden envy related to perceived unfairness or injustice. It’s an emotion that we often experience when we fail to set boundaries or ask for what we need, or when expectations let us down because they were based on things we can’t control, like what other people think, what they feel, or how they’re going to react.

When anger rises, think of the consequences.

Just as maniacs, who never enjoy tranquility, so also he who is resentful and retains an enemy will never have the enjoyment of any peace; incessantly raging and daily increasing the tempest of his thoughts calling to mind his words and acts, and detesting the very name of him who has aggrieved him. Do you but mention his enemy, he becomes furious at once, and sustains much inward anguish; and should he chance to get only a bare sight of him, he fears and trembles, as if encountering the worst evils. Indeed, if he perceives any of his relations, if but his garment, or his dwelling, or street, he is tormented by the sight of them. For as in the case of those who are beloved, their faces, their garments, their sandals, their houses, or streets, excite us, the instant we behold them; so also should we observe a servant, or friend, or house, or street, or any thing else belonging to those we hate and hold our enemies, we are stung by all these things; and the strokes we endure from the sight of each one of them are frequent and continual. What is the need then of sustaining such a siege, such torment and such punishment? For if hell did not threaten the resentful, yet for the very torment resulting from the thing itself we ought to forgive the offences of those who have aggrieved us. But when deathless punishments remain behind, what can be more senseless than the man, who both here and there brings punishment upon himself, while he thinks to be revenged upon his enemy!

Consult your resentment. It’s a revelatory emotion, for all its pathology. It’s part of an evil triad: arrogance, deceit, and resentment. Nothing causes more harm than this underworld Trinity. But resentment always means one of two things. Either the resentful person is immature, in which case he or she should shut up, quit whining, and get on with it, or there is tyranny afoot — in which case the person subjugated has a moral obligation to speak up. Why? Because the consequence of remaining silent is worse. Of course, it’s easier in the moment to stay silent and avoid conflict. But in the long term, that’s deadly. When you have something to say, silence is a lie — and tyranny feeds on lies. When should you push back against oppression, despite the danger? When you start nursing secret fantasies of revenge; when your life is being poisoned and your imagination fills with the wish to devour and destroy.

Holding on to anger and resentment is like drinking poison and expecting the other person to die.