How does the author use symbolism in the novel, Want?

Throughout the novel, the author uses Elizabeth's running routine to symbolize restlessness. Unable to identify the source of her constant internal distress, Elizabeth relies on her daily runs for a sense of balance. Whenever her routine is disrupted, Elizabeth becomes frantic. She needs to be in physical motion in order to silence the unstoppable rush of words in her head. Though Elizabeth feigns stability, her religious attachment to running illustrates the truth of her emotional and psychological states.