I think there is an actual clinical diagnosis for "Rumination."
It's so hard to get past the earlier slights, hurts, insults, abuse, and abandonment issues .. but .. it is necessary to let them go, put them in a box labeled history on a shelf in the mind, and move forward. Not an easy task when one has been damaged.
At age 60, my husband is often 'stuck' in birth family issues and cannot function in today's world with today's issues.
Will old issues get fixed/resolved? Not likely. Can they be put away as history? Hopefully. At least, that is the objective.
Live for today .. and tomorrow. Keep us posted.