Consider biofeedback
If your usual tension-busting measures don’t help, you might want to look into biofeedback therapy, in which you learn to control your body's physical reaction to stress. Dr. Mowry compares some cases of tinnitus to phantom pain (or sensation perceived in a body part that's been amputated); when a patient is suffering from tinnitus from hearing loss, she explains, it may be that "their brain is trying to fill in missing information" with the phantom noise. "For those patients, we do a lot of biofeedback," she says.