Found in 2 comments on Hacker News
mikevm · 2019-09-21 · Original thread
I highly recommend 8 Minute Meditation - https://www.amazon.com/Minute-Meditation-Expanded-Quiet-Chan...
mikevm · 2017-03-19 · Original thread
I got started with this book: https://www.amazon.com/Minute-Meditation-Expanded-Quiet-Chan...

I highly recommend it.

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