To disrespect the potential remaining in your primary flywheel—or worse, to neglect that flywheel out of boredom while you turn your attention to The Next Big Thing in the arrogant belief that its success will continue almost automatically—is hubris. And even if you face the impending demise of a core business, that’s still no excuse to let it just run on autopilot. Exit definitively or renew obsessively, but do not ever neglect a primary flywheel.

