Coffeelover, welcome to Psych Central (PC)
I will try to answer your question. You say angry words stick to you. It may be more correct to say you grasp angry thoughts and will not let them go. As long as you hold onto those thoughts and will not let them go, nothing anyone will say can change your grasping those angry thoughts. They are no more true than the polite apologies.

What is painful is for you to continue grasping the anger. I have found a way for myself to go beyond anger and sadness, to release them. And then they start to fall away.

Thicht Nhat Hahn is a Buddhist master who also embraces Christianity. His book on dealing with anger could be a life changing experience, no matter what religious beliefs you embrace
http://terebess.hu/zen/mesterek/Thic...e%20Flames.pdf

His books often suggest exercises - I encourage you to read only a few pages or a chapter during a session and try some of the exercises suggested

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Coping with Emotions - Forums at Psych Central

Community Liasons are more than willing to help if you wish to private message them