Dear [Name],
I am writing to apologize for my overreaction during our conversation the other day. I am sorry for the way I acted, and I understand that my behavior was inappropriate and unacceptable.
I understand that I should have handled the situation differently, and I want to take responsibility for my actions. I should have taken a step back and thought about the situation before reacting in the way that I did. I can see now that my reaction was not only unprofessional but also hurtful.
I understand that my behavior has caused you distress, and I am truly sorry for that. I have been reflecting on our conversation and I have realized that I could have handled the situation better. I should have stayed calm and taken a moment to think before speaking.
I am sorry for the way I acted and I want to make it up to you. I am willing to do whatever it takes to make this right. I am committed to improving my communication skills and I am taking steps to ensure that I do not overreact in the future.
Once again, I apologize for my overreaction and I hope that we can move past this incident. I value our relationship and I want to make sure that it is not damaged by my mistake.
Sincerely,
[Your Name]