I have social anxiety and I agree that therapy and role-playing can help.

It's true that it is hard to force myself into social situations, especially ones where I have been manic or depressed in before. Fear of judgement and rejection...

I recently moved and know NO ONE. I decided I was not going to let social anxiety paralyze me and joined 2 book clubs, a support group and signed up for a class in September. I'm anxiety ridden before
getting to these meetings, but so far able to sit quietly through them. Since there is a focus other than just chit-chat, it is an easier transition for me.

It might help to join some things where chit chat isn't the focus. For me, support groups are essential practice of the skills I need.