Nothing wrong in admitting you were mistaken in previous thinking. Hey, at least you were thinking! Ive done it many times myself. Visually its like a castle Ive built in my mind, a fortress intended to be strong and repel all future attacks from the dark side but as time goes by I notice a few weaknesses in the castles walls and the rain starts to leak in. Theres nothing wrong in rebuilding a few of the walls, or even scraping the whole building if its that unsound and starting again. Done it many times and yes it is exhausting but in time you have a firmer foundation. I always think of those little guys in big trucks when I think of the Napolean complex but I know what you mean.