I ground myself as much as possible; just "sit" and look around me and notice things. My worst anxiety attack happened when I was at college, sitting on the front steps of my dorm. I looked around, it was a lovely Fall day. I didn't have any assignments due or tests coming up, there was nothing in my life at that moment that could otherwise be responsible for the anxiety. It passed in a few minutes.

What is normally "calming" for you? I use to keep some books I liked at work and would read a page or so, take myself "away" from the situation or just getting up and walking a bit, going and getting a drink or listening to the others, getting my mind off the anxious feelings sometimes worked. Thinking ahead to dinner or some "normal" activity can pull one along and out of the maelstrom too, sometimes.