Maybe we carry these things--crystals, amulets, lucky socks--not because we believe in the power of the object alone, but because we believe we're stronger with them. Amplified. And maybe we are--maybe belief is that simple, and if it takes an object to carry such an amorphous concept as belief, what's the harm? It's when we infuse too many objects with too much power that we become burdened, weighed down.
Whatever gets you heard and gives you strength in this walk is an amulet worth carrying.