The real meaning of forgiveness

Forgiveness!! Such a big word! Such a hard word too! Humans taught each other not to forgive, playing recorders, Video recorders, paper to note things on, or just simply OUR brains is just some tools of KEEPING the memories including the bad ones. We intend to forgive on the outer side, but our brains keeps struggling, keeps on stirring this memory. The constant thought of revenge or waiting for a "bad" moment for that person who harmed you to fall or get hurt is always in your mind, even thinking of "God Revenge" or "divine revenge" as we call. God never hurts no one. It's just "US" who manage to "self destruct" ourselves..