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Sixteen months in the making, and backed by 300 of the latest scientific and medical references, "Hold that Thought: Reappraising the work of Dr Caroline Leaf" is an in-depth critical review of Dr Leaf's core teachings, contained in her two books, "Who Switched Off My Brain? Controlling toxic thoughts and emotions" (2009) and "Switch On Your Brain: The Key to Peak Happiness, Thinking, and Health" (2013).

It is free to download through Smashwords for iPad and Kindle compatible versions, as well as PDF.

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