Letters From A Skeptic by Dr. Gregory A. Boyd

We tend to become the decisions we make.  The more we choose something, the more we become that something…. The more we choose something, the harder it is to choose otherwise, until we finally are solidified-eternalized-in our decision.  The momentum of our character becomes unstoppable.  We create our character with our decisions, and our character, in turn, exercises more and more influence on the decisions we make.