With Chronories, your diary gets written whether you contribute or not. In addition to writing your own entries, Chronories will automatically gather for example local weather information, which websites you visited, e-mails you received, how long you've been working on your Mac and which applications were running.
Chronories is a diary application even for people who usually don't write journals at all. When you launch Chronories, you don't start with a blank page; all the data it is set up to retrieve is already filled in. If you don't have anything hilarious or noteworthy to tell, at least quickly take a snapshot of yourself with your Mac's internal iSight and tell Chronories how you felt today. After some time, the powerful charting feature will give you a solid impression of how many sunny days you've had, which applications you used the most or who you sent e-mails to.