I don't use GTD to take control of present moment actions (listing every small action would be a waste of time that is better spent 'determining what the next a

I don't use GTD to take control of present moment actions (listing every small action would be a waste of time that is better spent 'determining what the next action is'), I use it mostly to not forget delayed important tasks. As I grow old and grow in responsabilities I easily forget stuff and I don't want to be worried about it. I think GTD is a system that must be adapted to your particular work and personality. You can't use it out-of-the-box, that's why I recomend my implementation only as a starting point.