Everyone is surrounded by a field. Some are very subtle, its almost like nothing is there. Others are heavy, and when you lean into them, you may recoil--or be drawn in:-). I'm not sure how or why these fields come into existence. Sometimes I think that if you keep repeating a story to yourself, either consciously or unconsciously, that story takes a life of its own and becomes manifested writ large. So if you think "I am this" or "I am that" that intention emanates from body and becomes its own field. But I believe that more often than not the fields aren't really of our intentional creation at all. Perhaps they are in response to some trauma. The trauma might not even be ours. It could be ancestral, or perhaps our field could have been magnetized by being in close proximity to some other field.
Do you remember the kid in junior high that no one wanted to be around? I always felt sorry for these people, still, I avoided them at times like everyone else. Sometimes I befriended them. I'm not sure how this fits in.
Perhaps I'm still looking at this through conventional eyes. Let me get all woo then. If we are all portals, all channels all mediums that other spirits or entities interact with, perhaps the energy has nothing to do with us because there really is no "us". The energy we feel in ourselves or others could emanate from these entities. Or the lack of the entities.
I think that the earth also has its own field. As does the sky. And trees, don't forget the trees. And of course, the rocks and crystals. Its a jungle our there...lol