My therapist gave me a card with these coping tips. They take some practice but have been helpful.

Coping With Anxiety and Panic

1. Remember, feelings of panic are just exaggerations of normal bodily stress reactions.
2. Sensations are neither harmful nor dangerous - just unpleasant. Nothing worse will happen.
3. Anxiety is temporary. Instead of fighting it, relax into it. Just let it be.*
4. Focus on facing the fear rather than trying to avoid it or escape from it.
5. Stop adding to the panic with frightening thoughts of where panic will lead.
6. Stay in the present. Be aware of what is happening to you rather than concern yourself with how much worse it might get.
7. Notice that when you stop adding to panic with frightening thoughts, the fear begins to fade.
8. Wait and give the fear time to pass.
9. Look around you. Plan what you will do next as the panic subsides.
10. When you are ready to go on, do so in an easy, relaxed manner. There is no hurry.
11. Think about the progress made so far despite all the difficulties.
*Breathe