If all people, when they feel the first approaches of resentment, envy, or contempt towards others; or if in all little disagreements and misunderstandings whatever, they should, instead of indulging their minds with little low reflections, have recourse, at such times, to a more particular and extraordinary intercession with God, for such persons as had raised their envy, resentment, or discontent; this would be a certain way to prevent the growth of all uncharitable tempers.

It’s hard to despise someone after interceding for them in prayer.