Thanks for your question. It just helped me re-focus. The first time I heard the word 'hypervigilence'. Who knew?

It didn't occur to me, at the time, to come up with any strategy, as an alternative. I thought everyone had that intensity. But, that is me.

Sometimes, in therapy it would go away.

Some other things I used was to:
up my activity level
do one day, hour, minute at a time
relaxation CD
focus on me, not the subject/object of hypervigilence
slow breath in and out
Tap alternately on legs, arms etc

Thanks for the reminder that it can be countered. Back to work for me.