Greetings..
Johnny: Interesting post! Is it your experience that you can equally defend yourself, energetically, from the intended or unintended assaults by those seeking your energy? Although i perceive the same concepts you describe, i rely on different terminology..
Have you ever met a "natural ground", someone that, through no specific intent or training, acts like a lightning rod, grounding/draining your energies very quickly? I have little understanding of "natural grounds", but i am fascinated (and a little spooked) by their effect.. I have only met 2 and one of the 2 was confirmed by my mentor, he said, just avoid, they generally mean no harm.. from my experience, they have few friends or relationships.. people just tire quickly in their presence, which is unfortunate because it can set-up conditions for emotional issues for the oblivious afflicted..
Be well..
TaiChiBob.. "the teacher that is not also a student is neither"