Spread Your Light to Others
Have you ever tried to bring something back with you as you woke up from dreaming? The only things you can keep from a dream are memories and feelings. That's also all you can take with you when you cross over.
When you awake from a dream, you realize that the horrors or drama from the dream are over and that you were always completely safe -- no matter what. When you depart from this life, you will realize the same.