Angels and the Afterlife
Does everyone have a guardian angel?
Everyone receives angelic care, but not everyone has a personal guardian. Seraphim watch over humanity in groups, and a private pair is assigned when a person reaches one of three achievements: a supreme decision to become Godlike, entrance into the third psychic circle, or mustering into the reserve corps of destiny.
In the book's own words
Seraphim are not known as guardians of destiny until such time as they are assigned to the association of a human soul who has realized one or more of three achievements: has made a supreme decision to become Godlike, has entered the third circle, or has been mustered into one of the reserve corps of destiny.
The better next question
What happens when you die?