When the state is genuinely counterproductive to your goals, remind yourself of that while suppressing it.
Suppressing emotions is generally unhealthy. Living with suppressed anger is stressful. Either funnel the emotion into action or release it.
My goal is not to live with it, my goal is to remain stable until I can leave the situation. Long-term suppression is bad, but the alternatives to short-term suppression are generally worse.
I have funneled the emotion into action when possible (I am quite possibly the only teenager who configured FileVault in the middle of an angry argument), but sometimes you just need to appear calm.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.