This would be a perfect case for a clinical hypnotist, who can help you disengage the trigger from your panic reaction.
Another solution would be to use CBT techniques. See this link
I suggest you read the cbt article and then take a xanax.
Wait about 45 minutes
Get your coffee cup and set it before you.
Go through your thinking...listen to what you're telling yourself and what you're feeling.
Pick up the cup and do the same.
Write down your pattern of behavior with your panic attack being the behavior you want to eliminate.
Get you chosen thoughts in order and drink the drink.
Take control of your thoughts/breathing/behavior fiercely and work through it.
Keep repeating this again and again and again for an hour or until you stop having the reaction.
Repeat it each day at different times till the panic response is diluted.