Interesting. Great that you want to take full responsibility for your work. There is always two sides to a coin though. Strange to me that you scapegoat yourself that hard. Reminds me of the story, where someones error cost the compny millions. He gets called in his superiors office. He says something about resignation. His boss responds: "What? We just invested millions in your education". Every error we still have to make, is a treasure waiting to be dug up IMHO.