The essential part of our being can only survive if the transient part dissolves. Death is a condition of survival. That which has been gained must be eternalized, and can only be eternalized by being transmuted, by passing through death they must return
A belief in hell and the knowledge that every ambition is doomed to frustration at the hands of a skeleton have never prevented the majority of human beings from behaving as though death were no more than an unfounded rumor.
Now, a corpse, poor thing, is an untouchable and the process of decay is, of all pieces of bad manners, the vulgarest imaginable. For a corpse is, by definition, a person absolutely devoid of savoir vivre.
I've seen things you people wouldn't believe. Attack ships on fire off the shoulder of Orion. I watched C-beams glitter in the darkness at Tannhauser Gate. All those moments will be lost in time, like tears in rain. Time to die.
Your body must become familiar with its death -- in all its possible forms and degrees -- as a self-evident, imminent, and emotionally neutral step on the way towards the goal you have found worthy of your life.