I can definately relate to the substance being self-regulating. Fully agreed.
Infact, SWIM Sometimes gets intense fear and rapid heartbeat when thinking about the spice. He's still trying to work it out, but he thinks that this may be a product of the occasional negative experience that he gets from smoking. However, If the last experience he had was positive, he doesn't seem to get the rapid anxiety. Also, he says just a tip, if you smoke some till you feel 'fucked', but not fully immersed, sometimes in than minuite or so, you can get up the balls and really rip a big one.
shoe
ॐ भूर्भुव: स्व: तत्सवितुर्वरेण्यं । भर्गो देवस्य धीमहि, धीयो यो न: प्रचोदयात्
Love, Gratittude, Compassion, Fearlessness!