All of these suggestions are from my devotional reading.
“In your anger, do not sin. Do not let the sun go down while you are still angry.” Ephesians 4:26
“When thou art offended or annoyed by others, suffer not thy thoughts to dwell thereon, or on anything related to them. For example, ‘that they ought not so to have treated thee; who they are, or whom they think themselves to be;’ or the like; for all this is fuel and kindling of wrath, anger and hatred.”
Lorenzo Scupoli, Catholic author (1530-1610)
“Struggle diligently against your impatience, and strive to be amiable and gentle, in season and out of season, towards every one, however much they may vex and annoy you, and be sure God will bless your efforts.”
St. Francis De Sales