Everyone has a natural level of productivity. It will vary from person to person, but everyone has a limited amount of physical, mental, and creative energy. Every hour of work costs energy.
Certainly there are seasons in life that require focused time and commitment. And we should never discourage working hard on things that matter. Unfortunately, however, most of us have become busy over all the wrong things and we have allowed false assumptions to drive our schedules.
Interesting article about adding tools to improve productivity which result in, getting less done as the overhead to manage the new systems continues to pile up and pile up. Read the full article