In C.S. Lewis' autobiography, Surprised by Joy, he referred to various experiences as signposts to God. Among these are joy, gratitude and awe. These and similar experiences lift us above merely material experience. Consider Bishop Barron's take on some additional signposts to God. Consider these proofs for the existence of God.
By the way, here is a great (short) essay by one of my favorite writers, Dr. Tom Neal who teaches in a seminary in New Orleans. He answers his son's question, "Why does God exist?" Just click to read, if you are interested.