Everybody reacts to alcohol and other substances. But I'm not sure if many people understand social anxiety that well even though it is pretty common. As a disorder, that is, not just a minor thing. With so many people with this disorder, why does there seem to be little in the way of treatment? It is debilitating, and it can make for a hard life.
I think it is a complicated problem and therefore few people really understand it well. It has to do with complex emotions and beliefs about oneself. Those are not so easy to comprehend, and not easy to change. And people would like a simple solution like "just face your fears" and "take a few risks" or whatever. Will that resolve, or reduce the anxiety? Maybe it brings some relief and confidence for a little while? Then you've got to keep on doing those hard to do things despite the anxiety? It seems to me we need to treat the cause of the anxiety to reduce it. That's where it gets complicated as figuring out the cause is not an obvious thing at all.
Basically, as I've said before, we have a safety issue. So we want to understand what it is that makes us feel unsafe. That's where the complex emotions are. They put in you in survival mode though nothing is threatening your survival. Logic does not resolve an emotional problem, so that requires working on those beliefs you have about yourself, and clearing away the emotion associated with them.
And I'm just theorizing here. Clearing away old pains is a process that takes time. If you can make even a little bit of progress, consider that a victory, and it can motivate you to keep going. But where do you begin? I'm not sure.