Ian McAllister on what makes a great product manager:

One specific talent that all truly great product managers must possess is to see the world through the lens of their product. There is a background thread running in their mind during every conversation, meeting or other activity in their life ( work-related or not). That thread is taking in visual and auditory inputs and trying to determine what it means for their product. The thread produces new product ideas, impact prioritization, and over time improves the product manager’s overall pattern recognition abilities. […]

Being able to leave your work at the office is noble, and makes for good family men and women, but I think that any truly great product manager or entrepreneur couldn’t do it, even if they tried.