First, don’t tell me that the answer is just to “not bottle things up”, because that’s objectively incorrect too. Society doesn’t want you to have any negative emotions. I need to know how to not express negative emotions at all whatsoever unless I’m alone. I know it can be done because it is done in many other people on the planet.
This reminds me of something a European told me about dating in the US. “Americans say nothing is wrong and then blow up when it’s a level 11 problem and i had no idea anything was wrong. Where I’m from we address it when it’s a level 2 problem.”
Be a level 2 problem, not a level 11 problem. That means you gotta fucking talk.