Being hypervigilant is exhausting. What i have learned is that when I am feeling overwhelmed I need to find a place where I can narrow down my vigilant zone.

Think of your vigilant zone as a big circle with you in the center. You need to be aware of everything going on in every direction. If you are getting overwhelmed how can you make the circle smaller. For me that might be finding a corner so it cuts the area down to 1/4 the size it was. Or it could be going to my car if I am out shopping. At home I go to my room and close the door. Sometimes I do what I call putting on my blinders. I put my hands up to the sides of my head so I can not see as much of what is around me. (Like the blinders they put on race horses.) It gives me a way to concentrate my line of vision long enough to get me to a more comfortable place where I can do what I need to do to ground myself.

In my case most of my triggers are audio or visual so these work for me. I suggest you try to figure out what is triggering you and how you can reduce your vigilant zone for those triggers.

I hope this makes sense.