See

When Jesus called Peter to come to him across the water, Peter, for one brief, glorious moment, remembered how and strode with ease across the lake. This is how we are meant to be, and then we forget, and we sink. But if we cry out for help (as Peter did) we will be pulled out of the water; we won’t drown. And if we listen, we will hear; and if we look, we will see.

Madeleine L’Engle, Walking on Water