Hmm...Well, I will try to expand based on what I read of your theory. It is a bit too Karma-like for my taste, but I will give it a whirl.
I believe that mankind is created in the image of God, and like God, we are a triune being. Our three parts are the mind, emotions, and the soul. The soul is very hard to define, but it is the very essence of who a person is, their uniqueness, if you will. The soul also contains a mechanism known as the concience. The concience of course is that something inside of us that warns us of right, wrong, and the consequences of our actions.
So, if every negative action causes us to lose a bit of our soul, this could infer that we lose a bit of our concience, or sense of right and wrong. Soon, after enough negative actions, we would no longer be able to differentiate between right and wrong. If we are unable to know right from wrong, then, would we not be wild beasts?
Lisa