A common, reasonable assertion that most of us try to ignore at times. Of course we are going to make mistakes. One of the more frequent types of mistakes we can make are based on responding before thinking. Most of us can. More than just a few for myself.
Every mistake can be a good teacher, though.
If you are keeping a journal, describe some of the lessons you learned from your mistakes. This type of parent has one response to misbehavior which he or she uses in every possible situation. When I was growing up, one of my friends had a mother who was a screamer. No matter what he did to upset her, she would scream at him in a high pitched voice. Another had a father who used sarcasm exclusively.