The real power here lies in that small word *and*—conceive *and* believe. Hill isn't simply saying imagination matters; he's suggesting that conviction is what bridges the gap between daydream and reality. A musician might imagine a symphony, but without believing she possesses the discipline to compose it, the pages remain blank. What separates the person who sketches plans from the person who executes them is rarely talent but rather that harder-won ingredient: the unwavering sense that the thing is actually *possible for you*.