Eventually after experiencing Life and all of the negative energy that comes with living fully, you begin to realize that you do not have to re-live those unpleasant emotions anymore. It doesn't mean that you won't feel them again but once you make the transition into a positive mindset, there isn't much that can bring darkness to you.
It's a choice, it's a gift, it's a better way of life that you can give yourself.
Stay in the LIGHT and let it guide you.