The BBC website has a great relaxation exercise which you might like to try which was written by James Tighe, who is a Clinical Nurse Research Fellow
A basic relaxation exercise to try:
Choose a quiet place so no one can concentrate.
Before you start, stretch your arms, legs, neck, fingers, toes, in fact everything.
Sit or lie down and making yourself very comfortable.
Start to breathe slowly and deeply, just relax.
Gently tense, then relax, each part of your body, starting with your feet and working your way up to your face and head.
As you think of each area, imagine that they are warm, heavy and relaxed.
If thoughts come into your mind, just push them away, imagine them floating away.
Don't try to relax; simply let go of the tension in your muscles and allow them to become relaxed.
Let your mind go empty. Some people find it helpful to think of a calm, beautiful place like a garden or meadow.
Stay like this for about 20 minutes. Then take some deep breaths and open your eyes, but stay sitting or lying for a few moments before you get up.
