Nurseboy-
I worked with my psychologist to learn guided imagery. Actually, its not really guided because I lead myself through it. I have found it to be very effective when I am getting to the early stages of panic. It helps me relax and before I know it, I get bored of the imagery and the panic is gone. She told me the key is that when you are imagining your "happy place", as I call it, your brain doesn't know you are not actually there. All the soothing and comfortable feeling about that place come back to you and help you turn off the panic. I hope it helps you!
Jay