I would equate it with a sense of harmony in reference to the connection between a person's consciousness and the world around them. That said I also think this to be an illusion resulting from the structure of the brain and nervous system. This does not make it any less special in terms of human activity just less mystical.
So we got this brain that has no nerves attached to a system of nerves that the brain is constantly recieving input from. The brain 'feels' the seperation from the body that makes people think that they are something other than their body (brain included). But this is a self delusion resulting from the constant nervous input
to the brain with no input
from the brain.
To me, this doesn't cover the all feelings I have that I do have a soul. It seems more to me than just that. I don't find this explanation convincing because there's more to it, to me. It does make sense how some of the feeling I have could be caused by this though.
We humans tend to give greater weight to the things that happen in our own skulls as though we are incapable of decieving ourselves in order to support the illusion we find give us hope ,purpose or meaning in the universe.
Certainly a valid position for you to take. You've got the bases covered but I just can't get over the 'obvious' existence of my soul. Is it that the delusion is just that good, maybe that I
want to be deluded? I've considered all this and still have to conclude that I do have a soul. (Not that you're trying to convince me otherwise.)