How great leaders inspire action | By Simon Sinek
The Happiness Advantage: Linking Positive Brains to Performance | By Shawn Achor
The Habits of Happiness | By Matthieu Ricard
My Stroke of insight | By Jill Bolte Taylor
How You Self-Sabotage | An assessment fundamental to the Positive Intelligence course I offer.
Authentic Happiness: Using the New Positive Psychology | Several free online surveys that measure gratitude, optimism, etc. - I recommend the VIA Survey of Character Strengths.