Most People Plan the Opening. Almost Nobody Plans the Stop.
Law 29 of the 48 Laws of Power tells you to plan all the way to the end, and this series agrees with it. Vague plans collapse into improvisation, improvisation is crisis-to-crisis living, and the people who cannot name a stop get owned by whoever can. Greene's evidence is Balboa, who discovered the Pacific and still lost his head, versus Bismarck, who unified Germany and then refused the siren of more. The ancient correction is simple: the ending has to be a worthy end, not just a clever exit, and naming it is what makes bold action safe to start.