The Key Habit Of Highly Effective Teams

It provides the “how”:

1. Spend a few days in focused planning with your team.
2. Lay out the pillars that you believe will lead to success in your mission–your “master strategy.”
3. Establish a set of measurable key results that you aim to achieve by specific dates, to support these pillars.
4. Map out the big projects that your team will take on to achieve those key results, and then the specific tasks to achieve them. 

...answers the question of “who". When no one is responsible for something, it doesn’t get done. When two or more people share unclear responsibility, it still doesn’t get done.

The clarity of responsibility ensures that one person holds the ultimate responsibility for each piece of the plan.