I strongly prefer fessing up if I act badly. That's the first step in becoming good.
I have no interest in appearing to be anything I'm not. An I'm far from perfect.
Just yesterday a close friend did an amazing thing. He realized he'd made a big mistake, and three other people were involved. He had gone to work on a project that just would not fit into his life, due to prior commitments.
He took a day to look at his mistake and decide the course of action that was truest to him. He then apologized and told everyone of his new decision. All three people deeply respected him, even though he had let each one of them down, and two were very disappointed about the consequences of his dropping the project he thought he could start.
So, I encourage total honesty, even when we act badly. From that, we build integrity and strong relationships.