Archangel Michael or higher self experience?

I've had had neg-problems for many years. This fall the phenomena became more acute as I started experience leering demonic presences nearby. This started when I heard som audioclips from an exorcism.
I prayed to Archangel Michael and the presences disappeared (though the neg atmosphere remained).
I also had a vision of a face of the possessed woman being covered with ropes, like something within was bound and contained within.

Whilst standing at a bus-stop one afternoon I felt some anxiety )over a job related matter) and started praying silently again. Then something awe-inspiring happened: a very powerful voice, like a majestic opera tenor, very commanding came suddenly from above (level of the sphere above the head) telling me: "not to worry about that, it would'nt happen". I slightly felt there was a tinge of dark blue also in the atmosphere which might indeed relate it Archangel Michael.