becoming cold and embittered by experience is the opposite of what is supposed to happen, despite it being what we consider to be the logical order of life.
you're supposed to become a happier and more outgoing person with experience. why? because you once you have a bad experience, you realize what you must do to overcome it in the future. so why would you become embittered? just laugh it off! you choose to let your humor be ridden by something as so ephemeral as the past.