People and Process, not one or the other, trumps everything.

Continuing on this theme of Right People in the Right Seats doing the Right Things:

You need both great people and great processes, not one or the other.

If you rely mostly on great processes, at the expense of people, you will eventually have crummy people trying to slog through your great processes until they fail as well.

If you rely only on great people, without insisting on great processes, you will wear out your people who will leave and leave you with crummy processes.

Crummy people aren't capable of developing great processes.
Great people won't tolerate crummy processes.

It's a symbiotic relationship.  Can't have one without the other.  At least not for very long.

We'll be working on this at the In-Synk Executive Huddle this Friday