single killer

Anyway, it's not a single killer on their own that's important, it's when they act in tandem.  And the root causes are often the lack of rust and honest communication which requires a change in how leaders behave.
Norrgren recommends a rapid strategic change process - locking the leaders in a room and giving them a few hours to come up with three or four new strategic goals on one piece of paper that they're all signed up to.
It also needs to involve 8 to 10 of the most talented people in the organisation who them really trust in helping to implement the strategy.  [I can't say this process works for me - I think the top team will have lost the engagement of their people before they start.]
These task force members then each interview 8 to 10 people in different areas in the business and report back to the executive - which they do in a no-powerpoint fish bowl format.  [I like that.]