I had a life-changing moment at 12 or so when I saw a local "human interest" TV show about a kid who had trouble reading body language so he decided to manually

I had a life-changing moment at 12 or so when I saw a local "human interest" TV show about a kid who had trouble reading body language so he decided to manually figure out body language and social queues, just like you describe. As I saw this I thought to myself "You can do that?!" and set out trying to train myself. It's definitely possible if you put your mind to it.