I'm sorry you have these feelings too, but thank you for sharing with me. It is good to know you are not alone.
I have it constantly as well. I noticed recently that is pretty much always there in one form or another. Even when I am with my wife and kids, etc...
I've been discussing it with my therapist for some time and he is big on "Mindfullness". He says just to let it happen, be aware of it, etc...
It's had some effect on me and there are times when I sort of move past it and it morphs from a feeling of being watched to panic or rage or just generally feeling bad about myself. Even though I know I have to accept it in order to get past it, it's really difficult to do.
It's still very much there though and it can be debilitating at times.
My therapist suggested that feeling humiliated is how I related to my mom and step-fathers and I am re-living /clinging to this way of relating to myself. Its like I need them but the price is feeling humiliated.
Can I ask what strategies work for you to overcome the feeling?