ok, first rule in the book, everything you just said proves that you are NOT different. That you too are a human being like everyone else out there as we all have problems, personal issues and anxiety.
your gonna have ups and for sure you are gonna have downs. You need to learn how to cope with it. get counseling. It sounds like you need to heal yourself on the inside. To grind your teeth, thats some serious stress to cause that and it created pain. thats not good. you really need to try and overcome that.
every day is a new day. it might have the same old crap and the same old problems but its a new day to try and do something new to help you inside