I think it can be conquered, also realize SA can have many causes...
If it's something like food sensitivity or not enough certain minerals (or eg parasites or such), it can be fixed if you find out about it, and take steps and keep right nutrition for your particular needs.. (with enough magnesium and other healthy vitamins/minerals)
If it's because of depression/unrealistic thoughts, you can challenge/accept those thoughts with CBT or ACT, and it's kinda like brushing your teeth - can your teeth ever be really 'brushed'? - one day at a time, no?
I've had more and less sociable and 'brave' periods in my life, it's a lot about 'widening your circle of influence' and 'daring to step out of the comfort zone' ... (as corky as that sounds..

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and then doing one little thing, then another..
as long as you want to grow and do different and new interesting things, there will always be some anxiety, from the unknown, how others will accept this.. (new people or old acquaintances new ideas..)
I think waiting for anxiety to go away before you go out and meet people and do things is the wrong approach.. you need to do things and then anxiety will go away... and you will dare to do things within that 'zone'.. (while a new 'zone' may still seem scary - you need to break it up into smallest possible bits for it to be doable though) something like that..
I'm still single myself too.. (my parents quarrelled a lot and I heard kids of such parents often marry late, if at all..)
Jenna Glatzer, writer, had agoraphobia and is now happily I think married or partnered up, with a kid.. (She wrote a book on freelance writing, among other things..) She also edited Conquering Panic and Anxiety Disorder: Success Stories, Strategies and other Good News (I haven't read it yet, you can read a bit on Google books..)
Good luck!!
