Perhaps you made a serious mistake, missed a deadline, or had a tense workplace conflict. It occurs. Fortunately, there are many ways to fix things, but probably the best one is to write a sorry for my behavior letter.
I am writing to apologize for my behavior at our last meeting. I understand that my words and actions were inappropriate and misplaced, and for that, I am truly sorry.
My intention was never to be disrespectful or hurtful. Instead, I wanted to express my frustration with the current situation we are in. I realize now that my actions were not the best way to handle or convey my feelings.
I apologize for any hurt or harm that I have caused you and our relationship. I will strive to be more mindful and conscious of how I express myself in the future so that these kinds of incidents do not happen again.
Once again, I apologize for my behavior and hope that you can forgive me.