The past is a valuable thing: it holds valuable memories and teaches us lessons. Learn from those lessons and learn from those mistakes . . . and then let them go. If something bad has happened, see it as an opportunity to learn something you didn’t know. If someone else made a mistake, see it as an opportunity to be forgiving and understanding. The past does not define you. Think of the past as practice and training, letting you learn lessons so that you don’t repeat them. Don’t dwell on the bad aspects of the past and don’t live in the pain of old hurts. Move forward!