It helps guiding one's dreams, and to move with awareness in the dream world. It selects the most useful dreams for the dreamer and facilitates their understanding. It supports the body's self healing abilities during sleep.
The Self can be shared by a maximum of five people. It must be positioned at the head of the person during sleep so that the head of the person(s) using it is positioned in the ideal cone formed by the projections on the two spheres.