Throughout life we make mistakes. Sometimes they're small and sometimes they're monumental. But more often then not, mistakes lead to hurting the people around us. Sometimes when the people around us hurt, instinctively we hurt too.

In such times, we are reminded that to err is human but to forgive is divine (or some such bs lol). Forgiveness is the act of acknowledging ones mistakes and regretting the decision we now wished we had not made. Something as simple as 'im sorry' can begin to mend even the most broken of hearts.
The act of forgiving is to like setting a prisoner free and discover that the prisoner was you. It takes much strength to forgive, for forgiveness is an attribute of the strong (Ghandi said that).