[Sheenagirl]

I feel so sorry for your dog. You are thinking about putting him to sleep even before you seek professional help.
I think you know "you" are the problem here and your dog is the one that ultimately will suffer for your lack of leadership.
What have you been doing all this time - letting your dog control you and every situation that comes up??
Unless "you" get professional training/help with your dog you have issued him a death sentence.
DO NOT let this happen!