Taking responsibility for your actions requires to see the truth and admit wrong doing. Once you recognize that you are wrong the next step is to correct the negative action. Justification or lying about a wrong action is the worst you can do in this situation. It would not work and now you have double the stakes. If your mind is clouded and confuse, you may not see reality and will be unable to correct any mistakes. That is why clarity of mind is essential for self-evaluation. You need to keep an open mind in order to correct any possible mistakes you have made along the way.