I get what you're saying. People who are really close to me (i.e family) get that I really only "show" about three emotions, anger, happy, sad/tired. I have a very hard time expressing anything other than that coherently--so most often say one of those three. I can't get my voice/non-verbal cues to match up with what I'm saying most of the time so many people think that everything's ok when it's not. Because of that I learned several behaviors to clue people in that aren't exactly the most healthy ways of communicating. For example, I'm mad at my Sig. Other about something, I've been trying to tell them that with my tone and they aren't getting it so I walk off and slam a door. That usually communicates that I'm mad, but not in a healthy way. (Don't do this so much anymore, I'm getting better at talking about things these days).
It generally confuses me when people ask how I'm feeling. Most of the time I don't think about it, I just AM. Then I have to think about it for a while (a long thought process, and it never happens very quickly) and usually wind up saying I'm ok because that's the easiest thing to say.
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There are only 10 types of people in this world: those who understand binary and those who don't.