write a letter to my sons

I don't know how to write at all horrible but intend to write my children's a letter apologize for my bad behavior and drinking problem and bad relationship with mom that cause a end to father and sons relationship and I will love to prove that I have matured as a father we always had a good relationship the problem was me having bad temper and the drinking didn't solve it made it worst as a father I believe I was a damn good one too always made sure ya had every thing food toys movies random out of town trips for weekends and my goal is to keep our relationship strong but understand why I can't be around d as much do to my past relationships with your mother who is the best strongest person but her big problem she loves to much and I didn't know how to love her back as she did well anyways this is something I would like to write to my children but I don't know when to put a period coma all of that and I'm practicing but its difficult so if anyone may. convert my letter to one I could mail it to him I will apriciate. it thank you have a wonderful life surney ya LORD SAVES