A forum post recommended Sciral Consistency as an alternative to an NA list for repeating tasks, such as new daily habits you want to form (which you can sure have in learning a new system such as GTD).
I really liked the idea, and started off by setting target ranges for my new habits with a minimum of 1 day and a maximum of 1 day -- after all, it IS a daily habit, right?
Today, changed all the maximum ranges to 2 days. I am still shooting for daily, but, if I miss, I get a day of grace. Better, if I hit it daily, I am ahead of the game.
It sure looks like a lot of this is 'all in the mind'. But I guess I knew that, and this just reinforces it