Shorten:
-meetings (agenda, chair, minimum people, maximum 45 minutes)
-e-mails (greeting, purpose, action required and by when, thank you)
And thus Lengthen:
-thinking time (What are the key issues? What are any blockers?)
-coaching time (who needs to become more effective? How can coaching help?)
-planning time (tomorrow, next week, next month, next year)