Have a Customer in the Room

It is easy to lose sight of the point of view of others who do not participate in discussions.

It is easy to rationalize actions and make decisions, ignoring those who are not present or whose views are not expressed by others.  We all see the world and issues through our own eyes and may have a hard time projecting the position of others.  Short of actually having a customer involved in internal discussions, review your conclusions from their assumed point of view and let that outcome impact your actions.