I still think David Allen nailed it in Getting Things Done . Not the system necessarily, but he nailed the diagnosis of why we fail to get things done: an inability to be honest with ourselves about (1) the full scope and scale of the commitments we make, and (2) just how little time and attention we have at our disposal in meeting those commitments. Really, it’s the same sort of problem that is described in The Goal…
Can you say more about this?