Thresholds of the Mind

Often touted as “one of the best personal growth books ever written”…

Thresholds of the Mind explains the scientific principles governing mental, emotional and spiritual change, and how you can use this information to greatly accelerate your growth.

More Good Things to Know:

In Thresholds of the Mind, Bill Harris simply and clearly demonstrates how Holosync audio technology ends emotional dysfunction, improves mental functioning, and creates profound and lasting happiness and inner peace in those who use it.

What Customers Say

“Holosync should be part of everybody’s personal growth program, to take themselves from where they are to where they want to be, in terms of living a fulfilling, transcendent, successful, abundant life.”

— Jack Canfield

American Author

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Thresholds of the Mind


Bill Harris' book on creating positve change without resistance and discomfort
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