When Dhruva Maharaja was humilatedby his step mother,his real mother told him,Maamangalam taata pareshu Amamsthaah - Do not think inauspiciousness for others.
Similarly,after the destruction of Ravana, Hanumantha approaching Sita asks her,'oh mother! Shall I destroy all these raksashis who troubled you.'
In reply Mother Sita Says,Oh Hanuman! Na Kashchinaparaadyate' - who does not commit mistakes?'
We are ever ready to forgive ourselves but never others.Why Can't we learn to forgive others?