I've been using Getting Things Done for a couple or years now, but there is one thing that I still don't know how to deal with.
David Allen recommends "keeping an inventory of things that need to be done that require very little mental or creative horsepower."
I use OmniFocus for managing my action lists but I have a really tough time when it comes to deciding what to do when I have low-energy.
I've tried using a @low-energy context, but that didn't work for me, I might still be @work or @home and OmniFocus is pretty strict at only allowing a task to exist in one context.
I'd love to find some way of dealing with this, especially because when I have no energy I have a tough time deciding what to do.