The Hobbit, Heroes Journey.

When Bilbo begins his journey, he is a meek hobbit who scares easily although he has a desire for adventure deep down. During his quest he changes greatly and becomes more confident and commanding. Toward the end, the dwarves look to him as their leader since he is the one who often saves them from certain peril. Bilbo is the one who saves them from the spiders when they are about to be eaten. When he kills a giant spider without the assistance of Gandalf or any of the dwarves, Bilbo feels empowered and realizes that he is braver and stronger than he believed. He is always the one sent to see if places are safe for the dwarves, such as down the tunnel behind the secret door. Bilbo readily accepts these duties and is made braver by the use of his ring, which provides him with invisibility. He is even willing to go back into the goblin caves to save his friends when he barely escaped himself. His bravery allows him to take risks that are to the benefit of all.