I think that overactive brains are common amongst people with SP (because we overanalyse everything) and its this constant thought process that keeps me awake at night.
I've recently gotten sick to death of analysing my social problems and just thought 'forget it' and whaddya know, I feel better already.
Although I'm tempted to suggest that tricking our brain into thinking it hasn't got a problem is a good idea, its worth finding out a few ways in which you can make yourself comfy socially first (exercises and such) then maybe try my method.