Conflict starts with a purpose. Then it outlasts the wound.
The longer a grievance runs, the more it needs to be justified. You’ve paid too much—in time, in sleep, in who you were before this—to let the other person be ordinary. So you keep them large. You tend the story. An enemy worth this much can’t just be someone who wronged you once. They have to stay monstrous. And you become the curator of that.
That’s where the sunk cost of hatred does its real damage. Not in the anger, but in what the anger requires to stay alive. Every day you carry it, the debt grows. And the larger the debt, the more you need them to be worth it. The conflict stops being about what happened. It becomes about justifying what you’ve spent.
So every decision tilts toward them. Not toward fixing anything. Toward what proves you right. You’ve handed them the remote control. They’re not manipulating you at this point. You’re doing it for them.
This isn’t an argument for walking away from every fight. Some conflicts demand staying. The question isn’t whether to engage—it’s whether the fight is still yours, or whether it’s become a debt you’re servicing.
Psychologists call the far end of this identification with the aggressor. You become the person you despise. Hate a liar long enough and you’ll lie to expose them. The problem hasn’t been defeated. It’s moved in and redecorated.
If the conflict has stopped being about solving something and started being about making the cost feel worth it, you’re no longer running it. It’s running you.

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