Isabel reflects on her existence while strolling down George IV Bridge, realizing that her tendency to overanalyze her own identity is a significant issue for her. She recognizes that her constant contemplation about her life and self-perception complicates her ability to simply live in the moment.
This introspection reveals Isabel's deeper struggles with her individuality. Instead of enjoying her experiences, she becomes preoccupied with the complexities of her own thoughts, highlighting a common human challenge of self-scrutiny and the search for meaning.