In Agile Product Management , when product owners gets introduced to Scrum frame work, most of the time they have difficulty in transitioning from the detailed requirements world of traditional PMI world to the nebulous world of User Stories that are not really complete. But once they get coached on the fundamentals of what a User Story is and how to write them, their natural skill as a product manager accelerates their expertise on writing effective user stories.
Last week I had such an opportunity to conduct coaching sessions for the product owners in our team on writing effective user stories.