_Get Out of Your Mind and Into Your Life_ was the first book on the subject, written by Steve Hayes who started ACT. Since then many more books have been written. Another popular one is _The Happiness Trap_[0] by Russ Harris.
GOOYMAIYL is a workbook with a technical/scientific bend to it. He cites a lot of studies and data, and supports his theories quite a bit. If I had to guess, HN would enjoy this book, it's pretty geeky.
The Happiness Trap is much more of a self help book. No cited studies or any real hard data. Just gives a more gentle, friendly approach to ACT. Also an enjoyable book in its own right.
GOOYMAIYL is a workbook with a technical/scientific bend to it. He cites a lot of studies and data, and supports his theories quite a bit. If I had to guess, HN would enjoy this book, it's pretty geeky.
The Happiness Trap is much more of a self help book. No cited studies or any real hard data. Just gives a more gentle, friendly approach to ACT. Also an enjoyable book in its own right.
[0] http://www.thehappinesstrap.com/