Wow. Imagine that. The psychology of optimal experience. What a revelation this book was to me when I first read it way back in 1990. Imagine looking at what makes people happy and engaged rather than sad and depressed. I’ve always wanted to reread it and now I have. It was just as engaging and powerful this time as it was twenty years ago. I feel happy just thinking about times I’ve been in that experience of flow, when I was engaged in a task that I had the ability to solve but that required the devotion of my entire self to accomplish the job. A must-read for anyone interested in happiness.