In times of rapid change and growing mission complexity, the biggest barriers to progress often aren’t resources or strategy—they’re the assumptions we no longer question. Inspired by Adam Grant’s Think Again, this session explores how rethinking and unlearning can become powerful engines of momentum to accelerate any organization. The session provides a structured, actionable approach to “rethinking” and unlearning outdated assumptions that quietly slow progress. Attendees will learn how to facilitate assumption-testing, cultivate psychological safety, and integrate rethinking into quarterly planning, initiative design, and organizational rhythms. Whether you support strategy, planning, transformation, or organizational leadership, this session will help you replace stagnation with forward movement—and guide your teams toward long-term sustainment. Why This Session Matters Momentum requires adaptability. In high-change mission shapes, assumptions become outdated quickly. Rethinking helps teams adjust faster. Bridges strategy and action. Demonstrates how planning, facilitation, and rethinking techniques convert ambiguity into aligned movement. Applicable across organizations. Tools presented apply to any organization facing rapid change, cross-stakeholder coordination, or evolving mission priorities.