Today’s gallery image is from the co-organizer of the Chicago QS Meetup group, Mark Moschel. Mark has been experimenting with various methods of self-tracking and has even built a neat SMS-based tracking tool called Ask Me Every. You can read more about his tracking and work at the wonderful Experimentable blog.
This visualization shows 3 months of my happiness data. After reviewing it two years ago, it showed me that I was unhappy when traveling for work and, shortly after, I quit my job.