I'm in the same boat - drink always led to courage and confidence and I'd be in the middle of whatever was going on - sober me is very shy and introverted. However I think that the drink gives false courage and confidence and I'm looking forward to being able to socialise without the easy option - I know it's going be torture for a long while but I'm hoping to one day glimpse myself in the mirror at a social occasion with all the confidence the in the world but no hangover the next day - I see it as a project that I will have to master and it could take years - but hey it will be well worth it!
Don't give up I think remarkable things are around the corner for you!
Bobby