The nature of Scrum is a cycle.   Every two weeks feels like a brand new mission.   Sometimes, its easy to lose sight of the overall vision and lose our sense of passion and shared purpose.   A Sprint Theme, or Vision, can help with that.

* Use the sprint theme not as a list of work or stories to complete in the next two weeks, but as a commitment to changing the world - what is the most important thing we can achieve in this upcoming increment?

* It can be stories or features but it also can be improvements, clearing impediments or winning support

* Make sure the team builds it together - unlike organizational and product visions, a sprint vision is owned by the team, for the team.