Silence and Habituation

I remember at one point in my T stint I experienced habituation. I stopped noticing the sound not because it wasn't there, but because the part of my brain that was experiencing it was kind of 'fenced off' from my consciousness. It felt awful. Like being trapped in the corner of your own brain.
If you are habituated you can never fully extend your thoughts or senses. It's like living in a house with a 4' high ceiling.
It is not a cure.