Do I have each of the following secondary collection containers under control?
* gmail inbox
* gmail bugmail folder
* google reader
* desktop
* home directory
* bookmarks toolbar (safari)
* bookmarks toolbar (firefox)
* piles of paper or snail mail anywhere in my room
* voicemail

Look at the *contexts* in Next.
* Have I been neglecting any of my "common" contexts?
* Are any of my "rare" contexts coming up?

Look at the *items* in Next.
* Does every item have at least one of (context, concentration)?  If not, I probably haven't figured out what the next action is, and may not have even defined the desired outcome!
* Does any item has multiple of (context, concentration)?  If so, can I split it up?
* Does any item need to become a Project with a defined next-action?  (Esp the '⨀4' or '⨀5' items)
* Does any item need to be moved to Someday?
* Does any item have an impending due date?

Does every "project" have an appropriate Next Action?

Evaluate my mental state.
* Do I have everything out of my head?
* Have I been procrastinating on anything?
* Worrying?

Do any events next week (on my calendar) require preparation?

Am I doing anything inefficiently?  Can I automate it, improve my workflow, or delegate it?