i also personally find it strange how some people only have had it for a few years, i have had social anxiety my entire life, since kindergarten and probably earlier..for those that have only had it since their teens or 20s, id say their chances of overcoming are much better than people like me who have had it for their entire lives..
if exposure to social situations made SA go away, the mine would have went away a long time ago..in fact, i have read where exposure therapy can actually make certai types of SA folks worse..there are many variables when it comes to SA, one size or method doesnt ft all..