Guilt

Guilt is defined as a "negative feeling or emotion that people experience when they are convinced that they have caused harm in some way". It is said to be further defined as "remorse sometimes reflecting continual sorrow leading to "beating oneself up", unforgiveness and eventually depression."
No wonder the bible says "there is therefore now no condemnation in Christ Jesus."  His ministry is based on forgiveness.  He died to forgive us for our sins. Psalm103:12 "He has removed our sins as far from us as the east is from the west".  Don't accept guilt except for immediate correction and don't pass it on. When you get feelings of remorse, it can be a good thing, but it's better to recognize it, apologize and change the behavior that caused harm. Then forget it and walk away.  God doesn't hold grudges or perpetuate guilt. We shouldn't either. Cut yourself some slack. Let it go.