When panic started for me I used to read book titles on the bookshelves - anything at all. I used to have a whole wall of books, floor to ceiling. It got me to concentrate on something else. Music might be a good distraction, haven't tried that really, except singing in the car when I felt panic starting. When I use the clay, it's great to slap it around on the table getting it ready. That relieves stress for sure. But I cannot sketch or do fine detail when my mind is racing, better to take a break and get back to it. So, as Davit says, mindless type of work seems to do it better.