Yes me too...it can be so lonely, I'd only tour with my girlfriend.
Teeth grinding is a stress reaction....
Body and mind are saying, 'We don't like this situation and we are protesting!
'
Once you sort out your work issues it should go away.
But I agree with Amy, physical activities, dancing, running,walking
skipping, yoga etc should release some of the physical tension.
Got Youtube on your laptop?