For many (senior) people their day in the office resembles drinking from a fire hose. 

Not only do they need to attend a large number of meetings (often back to back), they are also hit with a continuous stream of ad-hoc questions from their staff, peers, customers, and line managers, which require their attention and action.

Technical tools like time management training and productivity tools do not address the issue.  What is required is a radical new way to set your priorities in the workplace.