Well what all have you tried?
Have you tried sleeping with a fan, a humidifier, and/or a better mattress and pillows?
Have you tried those videos on JewTube about melatonin waves and happy frequencies and shit? Relaxing soundtracks? Rainy mood maybe?
I don't know much about any of your problems really but I'll throw in whatever I can.
My mom used to grind her teeth at night and she had to by a mouth guard. Even I used to grind my teeth really hard in the mornings and I started noticing tooth pain. I don't know what I did to make it stop, but I have stopped keeping my teeth together throughout the day, but I do occasionally bite down hard sometimes I've noticed. It's whatever I guess. Maybe it's all psychological.
Actually, one serious problem I've noticed (aside from this fucking cavity I've had for almost 3 years) is violent twitching and spasms in the night when I'm trying to sleep. It's during REM and it wakes me right the fuck up. I have no idea what to do. It's not every day or week, but when it happens it worries me so god damn much.