Hey Paul, so! There are a few interviews I recommend for you to understand the relationship to the 'voices in the head' which you can find here https://eqafe.com/searches?utf8=%E2%9C% ... n+the+head
I recommend the ones at the bottom which are the paranormal ones called: Why Am I Hearing Voices & other Sounds? , The Who in the Guiding Voices, The Guiding Voices in Our Heads
So, as shared in another thread, there are no beings or any sort of spirits anymore talking into anyone's head/mind anymore. Any voice you hear it is your own, therefore there's no connection or no one you are letting in, you are doing it all to yourself.
A way you can consider testing out to change your relationship to those voices is by directly recognizing it is you talking to you, so use your own mind, your own voice as a tool of support for you and your process, which is what the mind is intended to be now if we take direction of it, as support, for the betterment of our moments.