Be Forgiving

Human may be a look like a fool for making mistake.
But they are smart for learning from the mistake and never do it again.
It is human nature to make mistake and that can't be helped.
But Allah is the Most Forgiving and can forgive us for what is done.
Even Rasullah can forgive the one that throw a rock at him.
So...how about us?
Should we get angry because of  one simple mistake and make them feel guilty forever?
We should learn from the mistake and forgive the one who has done the mistake.
It is useless to just stay angry.
So instead for making an enemy, how about making a friend?