I feel like productivity is a trap for me. When i try and capture it i get sucked into over optimizing.

So my guiding force here is simplicity. I use obsidian for ALL of my notes, lecture notes, literature notes and todos. Even my electronics project docs go in there.

Emacs with minimal plugins for serious text manipulation (still learning!)

And index cards for my day to day jot stuff down, becayse they're easy to referance! (Dimensions for woodworking, which lins goes to where when soldering, conclusions from my study sessions, etc.) And then when i get to it i transfer that to obsidian.

I find that the more productivity methods i have, the less productive i am, so just find the simplest thing that works and stick with that imo :D