I've realized that it's extremely difficult to bring culture change in an organization. The best a leader can do is NOT underestimate the effort required. That's where the Power of 10 comes in.
Any message, for it to be absorbed and internalized, needs to be repeated at least 10 times. Any lesser and it can easily run off the thick oily layer of habit that most employees carry.
The power of 10 runs against the natural inclination to say something new & different each time you meet your people. Repetition seems boring in a culture of 'what's new?' But habit is the biggest enemy of change and the power of 10 breaks it in small but sure steps.