I had symptoms of carpal tunnel for awhile. Easy test: hold the offending hand out, palm up, and strike your wrist with the two fingers of your other hand. If you feel tingling in your fingers or numbness (specifically a difference in feeling, in the offending hand, between your index and thumb than the rest), chances are high you're injuring yourself pretty badly.
I fixed mine by getting one of those
gyroscopic ball thingies that golfers and skiers use, but mine didn't cost nearly so much nor have cool lights or digital crap in it.