Here is a good one to start with...www.stress-relief-exercises.com/
...and we got the problem in the Resources taken care of...so you'll find much more there, just take a look and see what looks beneficial to you. :)
"Courage is not the abscence of fear, it is feeling afraid and doing it anyway!"
"Worrying does not empty tomorrow of its troubles...it empties today of its strength."
Corrie Ten Boom
Panic Syndrome recovery due to CBT