I've been mulling over Sacha Chua's old posts about the Quantified Self [1]. I think it's a great resource for anyone that want to practice being mindful with their own time.
Admittedly, I've been a bit lax on tracking my own time lately. I tried setting up Emacs with org-clock-table and org-roam-capture. But I quickly found that it's a bit cumbersome to maintain since I don't really spend that much time in front of my desktop.
Right now, I'm using the "Simple Time Tracker" app from F-Droid just to get the ball rolling again [2].
[1]
https://sachachua.com/blog/2013/03/quantified-self-time-tracking-choosing-your-buckets/
[2]
https://f-droid.org/en/packages/com.razeeman.util.simpletimetracker/