To whom it may concern,
I am writing this letter to express my deepest apologies for my inexcusable and reprehensible behavior. I am deeply sorry for the physical assault I committed against [Name], and I understand how my actions have impacted [him/her] and [his/her] family.
My actions were wrong and inexcusable, and I take full responsibility for them. I want to make it clear that I was not acting in self-defense, and that I had no right to physically harm [Name]. I understand that [he/she] was not at fault and that I should have handled the situation in a more appropriate manner.
I am deeply ashamed of my actions and I am committed to making sure that this never happens again. I am currently in counseling and therapy, and I am taking steps to ensure that I can better control my temper in the future. I understand that this does not excuse my actions, but I hope that it shows my commitment to making sure this never happens again.
I understand that I have caused [Name] and [his/her] family a great deal of pain and suffering, and for this I am truly sorry. I can only hope that my apology and my commitment to change will be enough to show [Name] and [his/her] family that I am truly sorry for my actions.
Again, I am deeply sorry for my inexcusable and reprehensible behavior. I hope that one day [Name] and [his/her] family can forgive me for my actions.