This document discusses how marketing and sales can perform well together through effective messaging. It identifies the top three causes of resistance to change as status quo bias, misaligned incentives, and lack of belief in the message. It recommends using contrast, members of their own tribe to sell the message, aligning incentives to tell the right story, and ensuring the message is compelling enough to not be dismissed at a glance. Messaging is framed as an act of leadership that can create tribes but also resistance.