Yes. It worked fine for me and appeared to help a lot, though with a sample of 1 it’s hard to say. I can say that reducing (but nowhere near eliminating…) stress and using SleepGuard ended nighttime grinding many years ago and that SG reliably beeped anytime mouth tension occurred. Arguably the root cause was a bad bite, which I later fixed with Invisalign.

For OP, I’d definitely recommend at least trying it. I’d also suggest a taking a 1-2 month mindfulness-based stress reduction (MBSR) class. Finally, if you get a night guard, try to get it from an orthodontist rather than a dentist. They take much more accurate impressions (often 3D scans now), know more about jaw mechanics, and may have access to more guard/retainer materials (like clear plastic liners).