What are the motifs in Everlost by Neal Shusterman?

Finding one's place is a recurring idea in the book. When the children first arrive at the Twin Towers, Mary asks what they like to do. She says they'll find something they like and they'll be free to do that all the time. What she doesn't say is these activities become obsessions that the children find virtually impossible to escape. Allie first realizes the situation when she discovers a ball game and a card game that repeat themselves daily, right down to one child accusing another of cheating and walking away from the game.