There are times, like when hanging onto a tree limb from a cliff top, when holding on is important. Holding on to good memories is also very beneficial as it assists us with healing from past losses and grief as well as gives us happy thoughts to draw from when we are not in happy places. Holding on can be very unhealthy and blatantly mean when it is bad or traumatic memories or any wrongs against us. These memories if held onto will eat you alive. Forgiveness is the key here to prevent such unhappiness. How do we forgive? Especially when they have not acknowledged a wrong or asked forgiveness? There is only one real lasting way. Knowing that Jesus Christ died for our wrongs against Him and anyone else because He deeply loves us and not because He was wrong so when He rose from the dead, we could be forgiven and live in heaven forever when we die. This deep forgiveness we were given is so complete, so great a gift, so hopeful and humbling that not forgiving someone else becomes quite upalling. Not forgiving is counter to appreciating the immeasurable gift of salvation we were generously given. Not forgiving is selfish. Not forgiving is a slap in the face of God who forgave us. So, forgive. Ask God to help you. He will. He always does. Forgive and let go of the bad. It is the right thing and quite freeing! And hold on instead to the truth of the Bible, pray, hold on to beauty and beautiful memories and experiences. Then you always have this amazing peace and joy and deep appreciation of life and hope for the eternal life. Can not get batter than that.