The soul... to me, I am the soul. The soul is the universal of existence. I am a soul which is to say I am an experiencing being, and I have a near body (that which I can move myself) and a far body (which I can observe but not move myself). I think that an electron has a soul too, and so does the universe, and so does an atom or a molecule or a protein or a bacteria or an ant or a mouse or a rock or a star. Soul experiences, body is experienced.
As for chemicals,, I sometimes consider myself a Utilitarian, which to me means, there is existence which is to be favoured over other existences, or perhaps non-existences, and we should pursue this. But then people bring in "happiness", "pleasure", by which they don't mean some supreme metaphysical principle, they just mean... things like dopamine, something we go up and down on all the time and which our body reacts to in a certain way. When we have "pleasure" our body says "go towards", when we have "pain" our body says "move away from". That's all it is, a biological impulse to prefer or disprefer something.
So "emotions" are a biological thing, which is a chemical thing, which is a physical thing. But everything stems from a soul which experiences, and that is metaphysical. Perhaps emotions reflect a cosmic order, but I believe that that is always a particular thing, and that the only universals we know, are universal because of OUR universe, and the true universal is the experience in the first place. Is any of this making sense?
Some may see a connection between what I am saying, and the idea of introvert-subject (which experiences) and extrovert-object (which is experienced). You are right to see this bias in my ideas, as indeed all ideas are a bias of particular nature. However I am trying to get to something deeper than that, perhaps something which goes beyond our universe. It is as though, to me, all experience is essentially the same, perhaps symbolised by a heaven-hell myth, every moment every thing chooses between heaven and hell, whatever these may be.
Perhaps hell is just nothingness. Do we want this?