We are the only species on the planet that can punish ourselves with our past; our history. There is a saying that goes something like those who do not learn from history are doomed to repeat it.
Is that true?
History is only history if it is written down and then it cannot be taken back. Whomever writes the history then creates the history true or not. So as no one can see all the information it is then a composite of individual viewpoints which we know from our experience is not complete nor totally accurate as it is biased.
So when we look to our own history how accurate is it and should we wear like a cross and so warp the present with the past. Experiencing the results of our actions and thereby learning wisdom is far different than continually filtering our present through the filter of our past.
Once the lesson is learned do we need the past any longer. Perhaps it is time to let go and live in the only time we have; the present.