Narcissists are deeply absorbed in the image they are trying to project to the world. They want others to worship their image to fill a void within. This is not a spiritual journey or even the first step into egoless-ness. It is a mis-step. It is a journey into the pitfalls of the human mind and its constant need for validation due to fear and insecurity. It is a pit of need that can never be filled and offers no real satisfaction.
Narcissists do not think there is a problem with their approach to life. They will rarely seek the egoless state that is the center of spiritual practice.
All souls eventually awaken to their union to Source Energy, Cosmic Creativity, and Expanding Bliss. Narcissists take more lifetimes to get there because they are on the completely opposite path to the one that leads to the egoless state of spiritual awareness. Yet even those with NPD are just delaying their eventual awakening in a future life.