Not sure what your physical exercise options are like but I believe there's evidence to suggest that things like sport can improve confidence. If it's an option

Not sure what your physical exercise options are like but I believe there's evidence to suggest that things like sport can improve confidence. If it's an option you should seriously consider it. Otherwise (and I have no idea what's available) you might get some benefit from talking to the medical profession. I don't usually like pharmaceutical solutions, but this sounds like it's badly affecting your quility of life. You need to address this otherwise you're increasing your exposure to depression, etc.