One thing I have learnt in years of struggling with the crap in my head, is to forgive myself.  So today I'm forgiving myself for what I've done, the physical pain is still there (as is the physical scar), but I'm letting go of the mental pain & lessening the mental scar (the pain I get from hating myself for doing it, for feeling like I've let myself and everyone else down).  It's done, I can't change that.  Best I can do is let it go & try a little harder to look after myself.