What's Done Is Done

many years ago i found this line and saved it,
not only i saved it i also had it as a screen saver on my phone so every day and every time i look at it, i had it in front of me.

today i have a much simple translation to this line -
leave your past in your past - most people don't know it or realize it but they live while having their past in their present.

there is no reason to live pointless feelings in the here and now when you can't do much about it.
accept it, make peace with PAST mistakes , learn from them , say im sorry and do no repeat in the present.