Luke Bryan is one of country music's biggest stars. He's also faced great loss. In a personal and revealing conversation with CNN's Anderson Cooper, Luke shares the advice he gave a young fan who was going through grief of his own. Go to CNN.com/allthereis to join the All There Is community, where you can share your story and watch Anderson's weekly streaming show "All There Is Live" Thursday at 9:15 p.m. ET. | CNN