So, I guess that's it...once you die before you die you realize nobody else dies, because no one ever truly does. There is no such thing as death, and it's no longer sad anymore. This is one way that you become different from many people because you may feel the sadness for a brief period, but it doesn't last too long. Your knowing kicks in, you realize this once the veil of grief is lifted, and you go into the remembering that no one ever dies.
Photo credit: http://itcvoices.org/perspective-heaven-hell/