Scripture about reconciliation
I would tell a non-Catholic that this sacrament is not just telling someone what you have done wrong but telling God what you have done wrong then he forgives…
What Does Romans 5:11 Mean?
Romans 5:10-11 (KJV) ~ For if, when we were enemies, we were reconciled to God by the death of his Son, much more, being reconciled, we shall be saved by his life. And not only so, but we also joy in God through our Lord Jesus Christ, by whom we have now received the atonement.
When necessary, just say you're "sorry" and it'll bring you peace . . . you don't know what you're missing from someone you've mistaken or hurt, and there could be a true friendship waiting to blossom . . . or respect from an acquaintance, worker, anyone . . . life is too short to have regrets or miss good opportunities because your ego gets in the way.