I have to take an opposite stand to some here. Feeling some guilt at something is fine. You should. But that is it. Let God know it was not your finest moment, and that you are sorry you may have hurt Him. Then................
........... DROP IT.
To continue bringing it back up is doing only ONE thing. It is playing into one of satan's most comfortable and most often employed tactics.... SHAME. And shame is totally contrary to God's will and word.
You are doing what satan wants, and not what God wants when you keep remembering what He has already told you He has forgotten.... "as far as the East is from the West."