Great list. The only thing I'd add is 'Amateurs study tactics, professionals study logistics'. I've seen too many projects held up for want of a nail. Anyone w

Great list. The only thing I'd add is 'Amateurs study tactics, professionals study logistics'. I've seen too many projects held up for want of a nail. Anyone who's worked for a larger organization knows that you'll have weekly team meetings hammering on the developers to get project X out the door on time. Then the developers will walk out of that meeting and spend three weeks trying to get the tools and equipment they need from IT with zero backup from leadership.