I have a 20-year-old, 37K-line todo.txt file (edited in Emacs) of all ideas I've ever had over those two decades, plus notes & some contact info. (And most of t

I have a 20-year-old, 37K-line todo.txt file (edited in Emacs) of all ideas I've ever had over those two decades, plus notes & some contact info. (And most of the actual to-do items are deleted when I finish them, so it's actually contained a lot more info over the that time.) I've tried a lot of other schemes, but this still seems like the best method for collecting and organizing my thoughts.