It's a very interesting idea. Sometimes I do let my brain go wild imagining crazy things when I'm trying to fall asleep. A couple suggestions:

- the TTS voice sounds way too excited for something meant to be relaxing

- the sudden speaking after 10 seconds of silence is very jarring -- I wonder if something like a reverse-reverb effect would be enough to "warn" the brain that a new sentence is incoming. There's an example of how to do it in Ableton on YouTube[0] but the basic concept is: take a short slice of audio from the beginning of the sentence, reverse it, apply a long reverb, reverse it again, trim the end a little. You get a sort of ghostly aspirated sound that leads perfectly into the original sample.

0: https://www.youtube.com/shorts/QuknZMUa7Rs

Gonna try it. And also share it with my friend if it helps me. Interesting idea. Thanks.