I use quire.io with four parent nodes titled:

- urgent important

  - critical tasks that have high yield on goal productivity

  - usually work stuff and active projects

- important not urgent

  - tasks that need to get done but are not time urgent

  - inactive projects, and other future tasks or projects

  - a backlog of soon to be "urgent important" items

- urgent not important

  - peasant tasks

  - daily tasks to survive (food, bills, etc.)

  - personal life stuff

- not urgent not important

  - tasks and projects that do not carry a high yield on goal productivity

  - home DIY projects, etc.

The urgent important section is where you should be spending most of your day time, but to live a stable life, one has to be able to balance out some time to the other tasks...or delegate those lower nodes to somebody else!