A coastline is evidence that persistence can reshape stone.

The rock is harder than the water and the water wins. Not in any single collision, which the stone shrugs off entirely, but across an unthinkable number of them. Persistence is not about the strength of one attempt; it is about the refusal to stop attempting.

When an obstacle seems immovable, stop measuring by whether today made a dent. Ask instead whether you can keep applying pressure for a long time without exhausting yourself. Sustainability of effort, not intensity, is what actually reshapes hard things.