Most people have been in some version of this mental stress state so consistently, for so long, that they don’t even know they’re in it. Like gravity, it’s ever present — so much so that those who experience it usually aren’t even aware of the pressure. The only time most of them will realize how much tension they’ve been under is when they get rid of it and notice how different they feel. It’s like the constant buzzing noise in a room you didn’t know was there until it stops.~ David Allen from, https://www.librarything.com/work/1844807
The key insight for me was once I realized there are two “directions” to thinking: I was always good at vertical thinking, going down thru a project (big or small), planning, organizing and doing. This was simply “thinking”, and how could there be more than one “direction” in which to think?
Unfortunately, I often got stuck when my brain started doing this other direction of thinking for which I had no name; no concept to attach: The horizontal thinking. The hopping from project to project — and I use “project” in the most broad sense of ANY thing involving a goal (“remodel house”, “send holiday cards”), any size (“seven years of projet management and contractors”, “buy stamps, buy cards, stuff, mail” ), and any number of steps. My mind hopped uncontrollably from thing to thing, around and around, across all the open loops, as the same things came up over and over and over.
These days, having a solid capture and review system enables me to close those mental loops. I can often read for a half an hour without my mind once interrupting me with some random, “I need to do this,” or “I need to remember that,” thought. (And if it does interupt me, I simple capture that thought once. Done. Freedom.) In the beginning I used paper notecards, then notebooks, software, and on and on. The exact system does not matter. It only matters that you trust your system. Only when you truly trust your system will your subconscious close all those open loops.