The best book I read this year was not a 2012 release, but HN participants should read it if they haven't already. That book is The Checklist Manifesto: How to Get Things Right by Atul Gawande,
http://www.amazon.com/Checklist-Manifesto-How-Things-Right/d...
which was mentioned favorably in several HN threads this year. (Thanks to the recommenders here who reminded me to read this book.) The Checklist Manifesto is practical, exciting, and thought-provoking in balance, and it will help you do your work better, whatever you do, and enjoy your family life better, whoever is in your family. It's a great read; don't miss it.