I just read an article from the Harvard Business Review entitled "The Magic of Doing One Thing at a Time" and thought it was excellent. I highly recommend reading the whole article (it's not long) but here are a few "policies worth promoting" from the article:
1. Maintain meeting discipline.
Among other things, this includes starting and ending meetings at a "precise" time and insisting that all digital devices be turned off throughout the meeting. Amen!
2. Stop demanding or expecting instant responsiveness at every moment of the day.