What task management system do you use?

What task management system do you use?

Despite all the Obsidians and AI, I control tasks on paper.

The system by which I don't lose anything is the Running List. I chose it for its simplicity and clarity.

You need a dot grid notebook and a pen.

You mark the sheets for the week. On a specific date — an empty square, opposite — the task for that day.

Done — shade it. Not done — cross it out. Postponed — an arrow with the new date.

Any day I sit down, open the notebook, and see all tasks for today.

What about you?