A book on what leads big change initiatives to succeed or fail, taking a longer term (3+ year) view on change programs focusing on 4 case studies from a big company. Some useful concepts to take away on the importance of building systems rather than relying on personal agency of leaders to sustain the change.
The keys to a successful change initiative are for leaders (division or CEO level) to step up at the beginning with clarity, align words with action and resources, then step back in the later stages (years 2 and 3) with focus on just one change initiative, and consistency.
There are useful things to draw from the book, but it seems targeted to a pretty narrow set of circumstances - big company, CEO / division GM, company wide change initiative. Generic guidance is probably useful in other circumstances. In general the book didn't excite me or motivate me - I preferred principles of life and work by Ray Dalio, which has a similar concept to Elsbeth's "systems" in his discussion of "tuning the machine".