We have just celebrated All Hallows' Eve (Halloween) in many of our cultures. In Mexico, Dia de Los Muertes is celebrated. It is a visit to the night of our psyche, the dark side that fascinates and frightens us.
As children, many want a light on in the room at certain ages, because in the dark our imaginations fill in the gaps, quite often with our fears. The mystic, on the other hand, embraces the night for much the same reason with wonder substituted for fear.
In the same manner, we confront the penultimate trip into the night. Death! We wrap it in the nightlight of religion and philosophy, but ultimately we get to experience it in fact. Some go to it as children fearing the dark and others go as mystics embracing the wonder.
I'm thinking the mystic has less difficulty going to sleep. And better dreams!