You can do anything, but not everything.
Productivity depends on a person’s ability to say yes and no.
Your brain will operate better and be more productive if you flip the switch and build in more downtime. We need to be in an engaged, happy, and relaxed state to perform at our peak.
The real lesson, is that it pays to use whatever freedom you do have over your schedule not to 'maximize your time' or 'optimize your day', in some vague way, but specifically to ring-fence three or four hours of undisturbed focus (ideally when your energy levels are highest).
The worker's effectiveness is determined largely by the way he is being managed.
The major incentive to productivity and efficiency are social and moral rather than financial.
Employees doing tasks that can be automated, the armies of middle managers who supervise them and all those with mediocre performance reviews and without hot skills are living on borrowed time.