WOW this guy's site is awesome. Just added it to my blog "good reads" list on the left side of this blog.
This guy writes really well and his concepts are really solid, and very much in tune with either 1) how I feel or 2) what I need to hear :) Really impressed with his blog and I'm psyched to read more.
Specifically a good place to start is his "Guide to Happiness", I thought it was very well written and he references Positive Psychology research and awesome people like Dan Gilbert and Daniel Kahneman. Very cool site, definitely worth checking out.