We all at some point feel the pain of backstabbing or wrongdoing. It hurts. Rather than displaying your anger, defer it instead of acting on it.
If you’ve been done wrong, do right. As in Prov 19:11
The discretion of a man deferreth his anger; and it is his glory to pass over a transgression.
There are several verses in Scripture that echo this wisdom in exercising prudence and patience, such as Prov 14:29, Mat 5:22, Mat 5:44, Col 3:13, Eph 4:32, and Jas 1:19 to name a few.
I’ve been the victim of my own anger, self-inflicting pain on top of hurt. Hold off on your anger. It helps no one, and the pain just lasts longer.
Forgiveness is a muscle. Exercise often.