The OCAI is a tool, like the Myers-Briggs. The book I read  treated it as a start for diagnosing your organizational culture, then provided a framework for accomplishing cultural change. I believe it's extraordinarily dangerous to approach (organizational) change without treating it as a process with defined goals.
BTW, I am a former smoker, and quitting was pretty hard. I'd chalk that up to changing my environment (I stopped hanging out with smokers).
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