Start reading the Law of One. Its a series of meditative sessions with a density 6 entity. We (earth) are about to transition to 4th density from 3rd. the battle is weather it will be a negative planet or positive. We are deciding right now.
The ones at the top know that we are all eternal beings and do not fear death, they know they are eternal entities in service of self and will be reincarnated again. The more evil they are the higher rank (polarized) they get on the dark path.
You ask yourself, how could they do that?
Well sadly they get stronger the more selfish and evil that they are however they can only achieve level 6 density and the Light side can achieve much higher level 8. They are powerless in the presence of a level 8 guardian or arch angel.