When we can relax our minds and just enjoy the moment, what happens? First, we realize that we don't need to carry the burden of a self. Past actions, present actions, even future actions--all of these are just actions that have causes and effects. There is no need to bind these together into the belief in a unified self. Causes have consequences, but there is always room to create better consequences. This is why we sincerely repent of any previous mistakes and make the resolve to do better in the future.
Does this mean that one should just forget about the past and take a carefree approach to life? To the contrary, I'd like to suggest that a sober and contrite view of one's previous mistakes allows a person to firmly internalize cause and effect. They will realize that actions do have consequences and take more precautions not to repeat the same mistakes again. At the same time, however, we should not conclude that just because I made a mistake, I am defined exclusively by that mistake. Mistakes don't define who I am. They don't even properly encapsulate the complex emptiness --the ever changing nature of causes and conditions that compose consciousness and the five skandhas. So yes, do learn from your past mistakes and honor them, but don't take them as permanently real. They aren't! They are just one of many instances and episodes of life.
Even if people dislike us for what we did in the past, we are not bound by others' judgments either. We can rest in the stillness of mind that is not defined by causes and effects. This awareness pervades all the directions. It is truly still even in the midst of turbulence because it is ultimate awareness, which has an empty and selfless nature.