Since roughly 1 year ago I have been making "leftoff" comments in my code, whenever a work day ended or so, with a few notes on what I was doing and what I was about to work on next.

And I recommend it, I think that's good practice. Because I forgot to do it on friday and I have no GOD DAMN CLUE what I was working on :|

Tip: Write `throw new Error("problem: <your task for next Monday, and your last thoughts about that>") at the end of your test-file.
Then you come back to work after the weekend and know exactly where you left off!

Thank me later, as I thank my Friday-4pm-me