I also feel like it gets to a roundaboutway of 'proving' things people already know. More sleep is nicer, unless it's so long it's bc you're sick. Drinking more means more dancing. Days when you sit all day working are less fun than walking around with friends (and, of course, not working then)

I feel like keeping a rough journal and manually revisiting would be more helpful than quantifying and correlating. But financial tracking can be useful, to a smaller degree, and tracking mood changes over big life changes can be valuable I guess. Otherwise, does feel vanity