Does your project list look like an airline departure board during a snowstorm? "Delayed" "Delayed" "Delayed" Are your managers constantly committing to stuff that just doesn't get finished? Here's the single sentence - with just three words - that will clear that departure board and Get Stuff Done: "You have control."

Simple as that. Let me explain: The phrase comes from flight training. When you're receiving pilot training instruction, on say a glider, you will at some point reach the stage where you and (more importantly) your instructor agree that you are ready to take the controls yourself.
No room for confusion
Up until that point, you will have been "following through" the instructor's guidance - the instructor will say something like "Follow me through on the rudder." This means you will mirror the instructor's actions, to get the feel of piloting the craft, but that the control has not shifted to you - the instructor is still in control.

Obviously, when flying an aircraft, there is no room for any confusion about who is in control at any point, so when the scenario shifts from 'following through' to 'having control,' there is an explicit, audible exchange that makes clear that control has shifted. The exchange goes something like this:

• The instructor says: "You have control."
• The student places her hands and feet on the controls and says: "I have control."
• The instructor then - and only then - releases the controls.