it's called forgiveness. Forgiveness of ourselves for not knowing what we know now and doing something we regret Forgiveness of others - which does not need them to have made any amendment for their ways or deeds done and Foregiveness of our history - we have no influence over that - but we have a responsibility to understand it, learn from it and not repeat it. Easy to say, harder to do.... but it is life-changing to let go of ill feelings