What is the theme in Eat, Pray, Love: One Woman's Search for Everything Across Italy, India, and Indonesia by Elizabeth Gilbert?

Religion is one of the main themes in this story. Eat, Pray, Love is the quest of a nominal Christian to find and become one with God. Elizabeth Gilbert needs a person to pray to rather than a "That," and accepts the loaded word "God" and use of the male pronoun (capitalized), knowing that any term will be adequate and inadequate to the reality.