However for me, the next actions I could possibly do wind up being numerous so I do keep them on a seperate sheet organized by context. Rewriting them weekly doesn’t seem productive in that regard. Choosing what to do each day is a new possibility with your one page system. Sometimes I feel that I’m working too hard though when my whole week is planned out.

I use a Circa binding based system and a self-imposed limit of at most two pages of next actions per context (work, home, phone, errands). Items don’t get added too often and when they’re complete, they get marked done and lingering items only rewritten to a new page when I run out of space and need to compact to a single page.

Yes, the shortfall of my system is losing the feel for how busy the week and each day is going to be, although most of the busyness is on the single “work” context page for me. I shall try your one-page approach though.

As for the “one off” and “ongoing” columns, read this post I did on roles and responsibilities for a little understanding on that area. My thinking on the whole concept of roles has evolved since that post but it might explain some things.