A system, in the way we use the word, is a set of containers. Inbox, calendar, project list, someday list. The point is not minimalism for its own sake; the point is to know where a thought goes when it arrives.
Without containers, thoughts recycle. The same anxiety returns at 11 p.m. because it never landed anywhere with a date on it.
We like the metaphor of trays because it admits limits. A tray can overflow. When it does, you see it. Digital lists can grow invisibly until they become a private weather pattern.
If you are building a system, start with one honest question: where do new tasks enter? If the answer is “everywhere,” pick one door and close the others for a week—not forever, just long enough to feel the difference.
This page is informational. It does not replace professional advice where that applies.