Authentic Happiness

I can't remember now how I came across
Authentic Happiness: Using the new Positive Psychology from the University of Pennsylvania, but it's really fascinating stuff. They've got a bunch of questionnaires to measure your happiness, including overall happiness, optimism, gratitude, grit, close relationships, meaning, strengths, and many others. Once you register, you can see all of your results in one place, along with analysis of your approach to life.