The vast majority of large scale change efforts fail. Which means that the probability that you have actually experienced a failure, and your people know that and are pessimistic, therefore, about trying something again, is very high.
John P. Kotter
More John P. Kotter quotes :
A higher rate of urgency does not imply ever-present panic, anxiety, or fear. It means a state in which complacency is virtually absent.John P. Kotter