The first thing that popped into my head when I read this prompt was “excuses.” I don’t know whether it was something told to me as I was growing up or an opinion I came to on my own but I think voicing excuses is a futile exercise. It doesn’t help me to name them and it isn’t helpful to the listener to hear them. Instead I should use the information learned from an experience to try something different. I don’t always succeed in leaving my excuses unsaid – especially in the company of close friends, but I try and wish to keep it a goal.
What should never be left unsaid is “I’m sorry” or “thank you.”