Is this a normal reaction? I don't know why I get insecure like that, because compared to before, I like myself a lot better now.
I'm not saying you're autistic, you certainly don't sound it. But everyone processes information differently. It might be simply shyness, if might be sensory overload. One way to tackle it might be to confront it. Tell yourself you'll look into the eyes of some people you feel comfortable with, then move up from there. Or look at something else, like the top of their ear or their forehead.
...I think I just rambled incessantly. D=