What's gone is gone

Because there's a certain moment, when you realize that what's gone is gone, there is just no reason to be thinking about the past, and be wondering if everything could be different, your present is like a mirror, it reflects your past and the choices you make today will be reflected in your future, so don't look back for your past, look forward, let the past in the memories, preserve the good ones, throw away the bad ones and turn the mistakes into knowledge.