Hyper fixation on emotions

How do you break the anger loops? I’ve been mad for days about the same thing (I despise my job). It’s like I’m just as mad as when the incident occurred and I keep replaying it over and over again. I’ve written in my journal, made a vlog just ranting, cleaned. Yet I keep replaying what I’m going to say once I go back to work. I really want to break this cycle of being hyper focused on things that make me angry. How do I do this? (I’m already in therapy)