When I'm fretting, thinking about everything, I'll think.. Well I'll just go take care of this right now. The thought of acting on it puts me to sleep pronto (especially laundry).
I've found hugging a pillow close is soothing. I'm almost tempted to sneak in a stuffed animal but.... one thing at a time.
Or you can try getting in a comfortable position, do not move and do not swallow. Old Tibetan meditation trick.
