There are several points in Divergent when the protagonist, Beatrice Prior, looks at herself in the mirror (in fact, the novel begins with a mirror). Mirrors represent how Beatrice examines herself constantly: probing her mind for weaknesses in order to figure out what kind of person she is. The constant presence of mirrors in the novel reminds us that Beatrice is maturing quickly, to the point where she’s often a stranger to herself.
The timeline below shows where the symbol Mirror appears in Divergent. The colored dots and icons indicate which themes are associated with that appearance.