There is a remedy, but like most things of the body, it takes a lot of work. So far I haven't been willing to put the work in to make it permanent.

You have to retrain the muscles. There are neuromuscular massage therapists who will work inside the mouth and teach you self-massage techniques (you can do pretty much all of it yourself once you know how). If you have dental insurance and your dentist prescribes the massage therapy, it should be covered. The shoulder and chest muscles are also all connected. You have to retrain how you sleep, how you sit during the daytime, how you hold your shoulders and jaw when you're not doing anything else and when you are doing other things.

I also had some success with a custom appliance. Frequent adjustments were critical to that thing working. Eventually I started seeing another dentist for reasons unrelated, so I had to quit wearing the appliance (wearing it unadjusted was WORSE for my jaw than not wearing it at all). If your bite is off, that really contributes to bruxism (your muscles are trying to align your teeth); the appliance substitutes its surface for that of your teeth, so if it's properly adjusted and aligned, your muscles will relax.

Good luck.