Experience is what you get when you don't get what you want.
-Dan Stanford
We don't always get what we want and the process of meditating what went wrong is where the real pay off occurs.
You learn so much more from mistakes. They're the loudest signal you can get that there is something to learn here!
So often we try to forget them and move on but that itself is a mistake.
Remember if you're in a bad situation, your thoughts and actions leading up to that situation are the reason your in the situation... "suspect both" as Grant Cardone frequently says.
So take a moment and reflect, analyze and learn then move on. Boil down the mistake to its root(s).