I'm going to address this part and leave the rest to yourself.
I can't judge the level of threat yet you can and you even go as far as have sympathy for people you don't know? And I have been in many altercations, I used to have a short fuse and I'm using my own experience, when you stop trying to be a tough for the sake of being tough it's fairly easy to be rational. I will also tell you something I'm pretty that you haven't been in many altercations because when you do, you realize how easy it is to really hurt someone or end up being hurt yourself, in a previous thread about fights, I'm pretty sure that I said to people to not fight, don't punch people and especially do not punch someone in the face because it hurts a lot, your hands won't like it and the fight is probably for a dumb reason.
But do what you want, try to act tough and pretend that you are all instincts and no brain.