I highly agree with this. One of my favorite Mary Poppendieck phrases is "Planning is not a commitment."
By day, I'm a product manager serving a group of fantastic engineers at Square.
By night, I fight crime and solve mysteries with a robot pal of my own creation.
By midday, I like a snack, generally a cookie.
Part of this biography isn't true (hint, I like cookies and engineering, I don't own a robot).