Consciousness of the Self, starts with the knowledge of self existence and the ability to, observe and discover all aspects of the universe. The more conscious we become the more we can directly experience the different vibrations of the cosmos.
More consciousness will result with more intense gamma rays in your brain and visa versa.
Developing more consciousness will eventually bring you to understanding that our true “Self's” are not our bodies and spirituality is discovering our Self's to be a disembodied existence or being.
Consciousness of Self, is getting in touch with the entity that is this disembodied spirit and how you can identified with this disembodied existence with the knowledge that this is who you actually are and that we are temporarily housed in our bodies.