Pinkypurple I'm exactly the same. I'm on an antidepressant, which helps with my depression, but the anxiety is ridiculous. Example - a neighbour invited me to go to lunch with her, in town (I'd been to this place before, with my husband)and for 2 weeks leading up to it, I worried about how I'd manage the multi-storey car park, what lane to be in whilst getting there, etc., etc. I even asked my husband to have the day off work and drive us there (he said no). I had palpitations, lack of sleep, all that. On the day, I drove there, went into the car park, found a place on the 1st floor, no bother. We had a lovely time and I wondered why I'd worried.
All I can say is that in my case, anyway, the anxiety is really about self-doubt and lack of confidence/fear of something new. I try to keep telling myself that I can do things, I am capable.
People who know me (or they know the persona I seem to project) think I'm confident, outgoing and very capable. That is what I try to portray.