Many of us develop strategies to maximise the positive while minimising the negative.
As humans we learn every day to be better than our past and this however showcases positive ideology by correcting the mistake we've done before because we intend to be better and the previous mistakes serves as a step forward to maximize the positive aim.
It is great if we are able to learn from our mistakes. We need to acknowledge we have made mistakes. We need to understand why we made mistakes. We need to understand what to do to prevent making the same or similar mistake again. There is a quite a process to it. Many people get stuck on step one.