I'm waiting for someone to make a life sampling application.

N times per day, for M seconds, turn on all my phone's sensors and take a short video capture of my computer screen.

Then upload that data (preferably to my own server, not yours).

Every couple days, I'll log on and tag the data. At 17:56 on 12/05, I was sleeping, working on X, talking to Y, going to Z, etc.

Sample 3-4 times a day for a year. Should get a really clear and interesting picture of your life after 3 months or so.