Ephesians 4:26
Rage can be a very difficult emotion for people with mental health issues. Especially PANDAS/PANS. Grace's experience with PANDAS/PANS includes rage towards herself.
Be ye angry, and sin not: let not the sun go down upon your wrath (When angry, do not sin, never let your wrath last until the sun goes down.)
When you feel rage toward yourself, do not act on it. Don't let the anger cause you to sin. When you feel rage toward others, settle your differences.