If we consciously dwell upon the error, or consciously feel guilty about the error, and keep berating ourselves because of it, then—unwittingly—the error or failure itself becomes the “goal” which is consciously held in imagination and memory.
Remember Athens Utilities! The more I believed that my memory was hurting my ability to work efficiently, the more I would beat myself up! Inevitably, the more others would make fun of me and my efficiency plumeted!