Tmj and teeth grinding suck. I remember breaking down into tears because of the pain and feeling hopeless because I already had a gaurd made by the dentist.
I feel like tmj even impacted me socially because I'd do weird shit with my jaw and feel awkward talking to people just because my jaw felt so tight some times.
Overall I think mine may have been caused by general anxiety, stress, anger and self esteem issues because now that I'm coming of age ,don't have acne, look good, feel confident,get girls,have a good social circle, etc I don't ever worry about my gaurd and never experience jaw pain any more. If you guys struggle with teeth grinding and it's causing you pain seriously consider working on your life style as a possible way to solve the issue. I use to think the stress theory is bullshit but it's not hard to see why the body would clench and grind the teeth as a reaction to stress or anger.
Other than that some helpful tips I learned:
-stay away from gum. This is just gonna get those same muscles more tight and shortened.
-Consider smoking pot just before bed to help you relax. I found that smoking weed helps with the symptoms such as pain and tightness even if you don't light up every night.