I don't know you might not have a personality disorder more than be suffering from being a rut. You're feeling inadequate because you have to depend on relatives to get by, not respected by your own children, and unable to control your own life. That gets bottled up and smoothed over while you're at work and in public because we're taught not to show aggression and frustration, but then it all spills up and over while you're alone and feel safe to do so.

I've definitely thought about webcam work myself, but yeah it doesn't lend to very shy personalities~ Are you crafty at all? Maybe making jewelry at home in your spare time and selling it on etsy could make some extra cash. It could also help give you a sense of accomplishment and purpose.