As we have seen, when he lived among us, Jesus looked to the channel of the Holy Spirit for the creative power that he needed. By the Spirit he did all that he needed to do, including walking on the water. And he told his disciples they could access that same power. You can talk directly to the Holy Spirit to empower you for walking on the water as Jesus did. But even if you have very little faith at all, he will reach out his hand and catch you.
Faith is as simple as looking in the right direction.