No amount of planning, no amount of strategizing, no amount of consensus building, and no amount of discussion will eliminate thrash, indecision, and distraction until some group of people are also willing to say NO.

No! To constantly changing priorities.

No! To constantly piling on more goals.

No! To focusing on the wrong KPIs.

No! To customer demands that are off-strategy.

No!

In these cases, your job (wherever you are in the org chart) is not to be congenial - but rather, it is to (respectfully, thoughtfully, but DEFINITVELY) put your foot down for the benefit of your colleagues and the overall company.