I think this is the key. Forgiving yourself is one thing (although sometimes it is hard to do), and some people tend to blame others rather than themselves for their mistakes, but learning from your mistakes, being honest with yourself, and move on with that learned-hard-way new knowledge, is the key I think.

Having said that, I totally agree with the main point of your article, Denis: nobody is thinking about your mistakes as much, and as long, as you do.