Disclaimer: I haven't figured any of this out. Start with my struggle with productivity and the results of my productivity experiment.

I also really like learning things, even when I'm not sure if I need to know that thing, and flashcards help me feel like that time isn't wasted (because I'll still remember that thing years later). Here are some details about my system.
Updated: August 4th, 2018

Sources, notes:

Key: ✍️ is a blog post, 📘 is a flashcard, no emoji means notes & highlights.
✍️ I made a RescueTime plugin for Mac Menu Bar August 2nd, 2018
This is Water by David Foster Wallace (Full Transcript and Audio) July 29th, 2018
Flashcarding is a superpower; don't drown in them July 27th, 2018
Why do we work so hard? July 22nd, 2018
Augmenting Long-term Memory July 7th, 2018
Productivity frustration: update March 5th, 2018
Productivity frustration February 22nd, 2018