I'm curious to know if anything happened 6 months ago that you could possibly attribute to your current loss of feelings? It sounds like you are someone who is pretty stoic already by your description of how you cope. The other thing I would think of is, did you increase a dose of something, or take something new, even herbal supplements? I, too, have social anxiety my whole life, but have had sudden onset of new symptoms that I found had an external cause.