You can't change the past. You can, however, build a future on it and we do, all the time. The difficult part is sitting with the pain and the hurt and the disappointment that can, sometimes, be the past.

Denial serves no one and "moving on" is certainly and ultimately necessary but so, too, is introspection and thoughtfulness.

Embrace that which has hurt you, that which has left you tearful or angry. Embrace it and know it for that which will one day be your strength.