For those who have difficulty in maintaining eye contact with others, do you ever find your gaze kind of "sliding" all over the place in the head region of tge person you're talking to?
If I try to take an eye contact, I can't keep it up long. It turns out to be an unnatural effort where I am just focusing to keep it and not even blink during it. As someone has said "if I make an eye contact, you can be sure that I am not listening you". My gaze won't wander around, it more like turns away to some empty space with as little distractions as possible.
I wouldn't get anything out from an eye contact anyway, as I have near-zero ability to read other person's emotions from his/hers eyes. Focusing on mouth is more practical, that way I can at least hear better what he/she is saying.
I find that if my facial expression seems "expressionless", people will tend to not try to chat.
Which is a good thing

Okay. That was a joke. Seriously saying:
When I have to communicate with people, I have a wide variation of fake expressions and gestures to make them feel more comfortable.
I don't mean that I fake my smile while I don't feel like smiling at all. I mean that if I smile inside, it won't always automatically turn to an actual smile outside, so I have to consciously make it happen.
@Tired Serious question: What it feels to you (as NT who is not in habit of doing eye contact) to make and keep up eye contact?I am NT, but looking in people's eyes all the time while talking makes not much sense to me too. I look them in the eyes when they are talking, and then often look away when I'm the one talking, because somehow it feels more natural to me.
That's how it works where I come from. Eye contact is generally not required in everyday communication, but considered more of as a challenge, or as a sign of love, or as a demonstration of strength (when first meeting and greeting with an another person, to give a positive impression). So avoiding eye contact is not a problem around here. (Though staring to own feet is...)That's very similar to how it works with tribal Aboriginal people. You look them in the eye when you first meet and shake hands, that seems to be a part of the hand shaking ritual universally, but after that you mostly only talk to one of their shoulders, now and then glancing up to the eyes to add emphasis to a comment.
Oh god... Done something like that myself. Not meant to be cheeky or anything, it just came out... Not a good line to say to anyone...I looked up at a very angry girlfriend who said "You haven't heard a single word I've said!". In complete honesty I said "No, I didn't even know you were home.".