Noah Kalina took a picture of himself every day for six years (and still going); above is all of the pictures put together into a time lapse. Now that's diligence.
When I was collecting my own step data with a pedometer, I would constantly forget, and eventually, I just got bored with it. I think my interest faded because collecting one number per day wasn't satisfying enough. This on the other hand, seems more personal, it takes a little less effort, and it only takes a second to take a picture, and like they say, a picture is worth a thousand words. String them together and you get a story.
Even Homer Simpson did it.
How about you?