What data do you wish you had access to/isn't easily trackable?

Quantified Self Apps & Tools
4

I’d like to somehow automate tracking of mood, focus, other internal brain-states.

I used to do this by hand, but there’s so much variance over time, and it’s kinda annoying to do.

Been hoping/trying to do this with EEG/fNIRS/etc, but it’s hard.