system
A chat on 4chan
human
Spin your index fingers around each other (or some similarly monotonous action) for 5 minutes at a time while you think about the bad memory 

You won’t forget it completely, but your mind will eventually begin to categorize it as a task-oriented memory and the emotional scarring associated it will start to fade away
gpt
Do this at least once a day (more if you can) for a couple weeks, or until the memory no longer elicits a trauma response.

This has worked well for me in the past
human

Just to clarify, you need to keep accessing this memory over and over during the session and letting it play out in its entirety. Think of it like wearing out a VHS