I’m not good with masking my emotions sometimes, although I do try to process the things before I take any action.
My face and body language on the other hand can reflect what I’m going through at the moment.
Are you aware of any ways to control yourself under difficult situations (apart from things like meditation) ?
For me it was growing up with religious fanatic parents who taught us to interpret the “wrong” emotions as moral failings.
I don’t know where you’re at in your life. Maybe you do need to learn to control your emotions more. But also consider learning to accept your emotions, learn what they are telling you, and find a healthy way to process them.
And if you have people in your life who can’t deal with you having emotions, you may need to evaluate that as well.