Premanand Maharaj Ji
How can I stop hating someone who has done wrong?
See Bhagwan in the person you hate
Bhagwan lives in every heart, so hating anyone is hating Bhagwan himself. You can tell a wrong person he is wrong without spoiling your feeling toward him.
If we hate anyone, we end up hating our own Bhagwan. That is not right. However wrong a person may be, we can tell him so.