In the middle of a panic attack, visualize a peaceful scene. It may be hard to do this at first, but with a little practice you will be able to ride out a panic attack by visualizing a peaceful place and allowing yourself to relax until the panic attack subsides.
When you have a panic attack sit down and figure out how it's making you feel at the moment. On a scale from one to ten to rate your feelings. Wait for a while and then rate your anxiety again. Continue until your anxiety is back to a 0.
Concentrate on your navel during a panic attack. Sit or lie down and think about your navel, the center of your body. Your navel feels no tension nor pain and it is your connection to the people you love. Imagine a silver cord going from it to the person you love more than anyone else and then draw their strength through the cord into your body.