Consciousness, Insanity, and being psycho..

I have a new addiction. It's called Post Secret. It's a blog located at www.postsecret.blogspot.com Post Secret is were people mail their secrets in on post cards.
The blog owner posts the post cards on the web. Some are silly, some are funny, and some are down right awful. I will warn you it is highly addictive and updates on Sundays I believe.
This makes me wonder. No matter what wrong things someone may do, they can almost always justify it in their head. Example, "I her with a stick because she pissing me off." I justified my violence for someone else's rude behavior. Does it really make my beating less wrong? I don't know. Is it okay to be mean and violent if you have a reason. What reasons are okay? What makes something wrong or bad? Psychopaths supposedly believe that they are not bad, and the things they do are justified. Most people agree that someone who does wrong is a bad person. What if you do wrong, justify it in your head, and don't consider yourself a bad person? Does that mean you're psycho? Maybe I am just psycho. I am told the first sign of sanity is to admit being insane. So if admit that I am psycho, does that make me sane and my actions justified? I'm giving myself a headache. Anyway, Check out Post Secret when you get the chance.
Take Care,
Charissa