Maybe it would be therapeutic, in the meantime till you can resolve the problem or it resolves itself (mercury/metals can cause this problem, anger, noise sensitivity), to get an IPod or something and plug yourself into some soothing soft music or the sound of a waterfall or something like that, for part of your day or during stressful situations. The earplugs will also block out a great deal of environmental noise, kids yelling, dog barking, whatever.