Forgive yourself for the choice, then prove it with the next one.

Guilt that keeps running is not accountability, it is a loop that feels like paying. At some point the useful part is finished. You have understood what went wrong and what you would do differently, and carrying it further returns nothing to the person you affected or to you.

Say the repair out loud if there is one to make, then let the next decision be the argument. Nobody is convinced by how bad you feel. They are convinced by what you do the second time the same situation shows up.