Hi Ivan,
I’d recommend reading Bruce’s last book on meditation, Taoist Sexual Meditation. Even if you are not interested in the sexual work, I think it’s the best book that Bruce has written on Meditation.
The book is broken up into three sections, Jing, Chi and Shen. I think you’d find all the material that relates to Shen to be very interesting.
In Bruce’s system, energy is broken up into 8 types of energy or bodies. The 8 bodies are Physical, Chi, Emotional, Mental, Psychic, Karmic, Essense, Tao. This is the progression between Jing, Chi, Shen. I’ve heard Bruce describe psychic, karmic and essense energy as the energies that are thought to make up Shen.
I’ve asked similiar questions of my teachers. What do the higher energies feel like? How do I know when I’ve found them? Can you describe what they feel like?
The think the best answer that I’ve received was “I can describe what it feels like with all sorts of words, but none of my descriptions will help you find it. Often, the verbal descriptions can slow you down, because you’ll have some idea of what it should feel like and this will distract you from what it does feel like.”
Janak