I think some things override our social anxiety to the point where the doubt doesn't matter and we keep going, almost like joining a singing quir (sp?).  You can latch onto that but i think what you're really looking for is to let it go entirely.  Feel the fear, do it anyway.  Let the expectations go.  Just because it may not all happen overnight doesn't mean we are not in proving. Rewiring our circuits, etc.  It takes time to create the neural pathways, don't give up when you just start.