Clenching my teeth is ruining my life! even though i have a nightguard i still can't sleep well, and i clench all day. i don't know how to stop, do you?

Yes: Some joint displacement and pterygoid hypertrophy are the result of chronic nocturnal clenching. These nighttime events create tremendous muscle force and activity that can be at play. Find a dentist trained in treating tmd pain with a nti devise.

Try other approaches: While nightguards are a routine remedy for the grinding ; clenching, they are not the only treatment. In many patient the gradual "deprogramming " of the firing muscles ; trigger points could be considered. Also in some cases application of some specific physical therapy exercises can help, ..With or without prescription of some muscle relaxant meds. See a properly trained dentist ; good luck.