We do have control over the past for the reason that we are the architects of it. It was us who made mistakes not someone else, yet we must learn to forgive our flaws because we are not perfect beings, we are humans. Furthermore, one must remember the past and learn from it. Those who go back and live in the past are the ones who have a problem they need to fix and that is why they keep revisiting those moments, unconsciously they may try to repair what is wrong.