I have a poor sense of how I spend all my time, and that leads to sub-optimal decision making. I've been building a web app to easily track my time usage and display it as a historical calendar, and adding features to get the most insight out of reflecting on it (running stats, notes, etc.) The most recent handy feature was an xmpp chat bot interface for lowering the friction on adding data.

The inspiration was the quote "Those who cannot remember the past are condemned to repeat it", which jives with the observation that how one spent their time last month is a better predictor of their future than how they wish they would spend this month. People have a lot of inertia, but tend not to notice.

I'd be especially interested in any tips about research on past-time perception.