Premanand Maharaj Ji
When someone treats me badly and I start hating them, what should I do?
Look at the cause, not the action
Ill will toward someone who treated you badly is ordinary human nature, but a wise person reaches the cause and does not rest on the action. When you do not rest on the action, hatred does not arise.
A wise person reaches the cause and does not stop at the action. He abused me, I did nothing wrong, yet he wants to show me his anger.