Namaste Viraja ji,
I see several great answers. I would like to offer a traditional Vaiṣṇava approach that I don't think has been mentioned yet, one that I personally think is helpful and requires little more than practicing changes in one's perspective. My primary source of information about this method is the book Vaiṣṇavism: Its Philosophy, Theology, and Religious Discipline by S.M. Srinivasa Chari, but I've supplemented it with information from other sources.
A Vaiṣṇava can practice patience when receiving harsh words, because she or he sees the truth of the situation in three ways. First, the harsh words are directed as his/her body and mind, which is not our true nature, not who we really are, not the soul. In essence the jīva or soul is a knower composed of uncontracted, limitless awareness, which is suppressed until liberation according to Śrī Rāmānujācārya (see for example Gītā Bhāṣya 6.32). It is an eternal mode (prakāra) or modification and part (aṁśa) of Brahman. One cultivates the perspective that one is not the mind and body that is subjected to insults or that the insults are not directed at our true selves. Second, the person who is hostile to us is only acting out of ignorance, creating negative karma that will ripen in suffering. The Vaiṣṇava recognizes this and looks upon this unhappy person with compassion, as Vaiṣṇavas are advised to do in the Viṣṇu Purāṇa. Third, the harsh words are a karmic echo, the return of our own negative past speech. A Vaiṣṇava practices acceptance of this fruition of past karma in order to allow the results of past negative karma to arise and cease without contributing to more of it. In this way a "negative" situation (from the ordinary perspective) is a positive way to lessen the karmic burden or pay old debts. One can rejoice at this opportunity for removing karma and see the hostile person as an instrument of God.
Additionally, a difficult deed becomes easier if it is done selflessly, purely for God, by God's grace, and accepting God as the doer. Śrī Rāmānujācārya encourages this attitude toward our actions in his Gītā Bhāṣya (see for example G.B. 3.30).
I hope that this is helpful to someone.
praṇām
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