I don't know much about astrology, but I do know that my 12th house is Sun (but I am also being leo with ascendant leo). Anyway, it's exactly as you described. I often deal with energies that are not mine solely, I had numerous mystical experiences (both pleasant and unpleasant). Hidden, subconscious and unseen are deeply ingrained in my blueprint so eventually part of my career was working with the subconscius as a hypnotherapist. 
Thanks for this note!