As Shakespeare noted, “Uneasy lies the head that wears a crown.” In contemporary language, the work of a leader is never done. Even if a leader has cleared her desk of all ongoing tasks for the day, the job is not over. Leaders must manage the present while preparing for the future.

https://hbr.org/2018/08/you-know-you-need-more-sleep-heres-how-to-get-it