This sort of data collection and information extraction is becoming easier and more accessible. I’ve personally used tools like RescueTime and TrackYouHappiness.org with some benefit. I can see this becoming more prevalent and also the quality of information (as opposed to data) going up. I’ve been trying to track my migraines and workouts, but don’t really know what I’m looking for and it is difficult to maintain. One thing I love about tools like Kissmetrics is that they allow you to throw data at them and then build funnels after the fact with that data. That sort of post processing seems ideal for life tracking like the article talks about. Along the same line of reasoning, being able to combine multiple life streams that may individually include different pieces of data about you in to a single system would simplify collection as well. If my Twitter stream, RescueTime log, Gowalla checkins, and happiness reports were all pulled in and correlated together I imagine I could get a much clearer picture of what things impact my mood and productivity.