Control yourself.

A man's wisdom gives him patience; it is to his glory to overlook an offense. (Proverb 10:11)

A fool shows his annoyance at once, but a prudent man overlooks an insult. (Proverb 12:16)

A gentle answer turns away wrath, but a harsh word stirs up anger. (Proverb 15:1)

Starting a quarrel is like breaching a dam; so drop the matter before a dispute breaks out. (Proverb 17:14)

Do not repay evil with evil or insult with insult, but with blessing, ... (1 Peter 3:9)

Let us therefore make every effort to do what leads to peace and to mutual edification. (Romans 14:19)