What really works to relieve carpal tunnel syndrome?

Question: “What do you do to prevent/avoid aggravating carpal tunnel? It seems to me that stress aggravates it more than the actual repetitive stress action. When I’m relaxed/happy it doesn’t seem to flare up or bother me at all. But it’s returned lately in my mouse hand, which is often so weak I can’t open a jar. Have you invested in any special equipment that actually works? (A wrist brace made it worse for me and bothered me as I tried to type/move the mouse.) Hot or cold gel packs? Something else?  I appreciate any suggestions that have provided relief.” —Ergonomically incorrect