Well I would take the non supplement route because if not you'd just be using a garden hose to take out a house fire... Best to tackle the problem from the roots. Get some rest, tone back the volume for a week. Don't be afraid to go over on your calories a bit. And relax.
If supplements are a must you might try some holy basil, ginger, and some st. (somethign can't remember the name), these all help you relax. Your adrenals are probably constantly firing.