Premanand Maharaj Ji
Why should I give up anger and forgive people?
Anger destroys merit; forgiveness brings grace
Anger causes a fall and destroys the merits you have earned, while forgiveness brings Bhagwan's grace. So be serious in nature and forgive.
By being forgiving, Bhagwan's pleasure and grace are received. By getting angry, we only fall. Anger destroys our merits.