The standard human has a mind that can be divided into personal mind (lower 4 mental subplanes) and the higher mind (higher 3 subplanes).
Each subplane in the mind has elemental intelligence and the lower cluster of subplanes usually is managed by a nature spirit with the higher cluster managed by a solar angel (soul).
Now at the top of the personal mind (5.4) is concealed another intelligence that we might call the Personal Will. The PW manages the personality to protect the PW's highest asset - self-esteem. We all know humans that cannot admit to being wrong. That is the PW speaking.
The PW conceals itself within the mind, making itself largely invisible.
If discovered the PW may inform the human that it (the PW) is actually the human or may explain that it is the Christ or some other beneficient being.
The PW often uses a shiny veil across the back of the mind space on 5.4. It conceals itself behind the veil and places its own thoughts into the mental space of the human. Since most humans cannot control their thoughts, the PW usually has easy control.
Behind the veil, I usually observe 2 passages that adverse entities use to enter the human mind space. Since their presence is concealed behind the veil, it is difficult, even for the better than average human to deal with them.
The intruding entities have fearsome supervisors and therefore may become desperate in their attempts to subvert the human.
The PW is more commonly known as The Dweller on the Threshold.
The PW is actually valuable as it drives the human to get its act together. When the human establishes on-going real time contact with the solar angel, the PW changes from defensive to creative.
As far as I can see in your case the dark influences are entering behind the veil. They manage thoughts but are not possessing entities.
The only way out is to learn to control your emotions and then control your thoughts. This is usually done by moving the light body to higher frequencies so that eventually it is operating above the range of the adverse entities.
The Flame is perhaps the best exercise initially. That can be extended into rising on the planes. There is a lot of work, taking most humans many lifetimes
https://www.thenewagesite.com/index.php ... threshold/