Sylvia Plath reflects on her sense of self, emphasizing the uniqueness of her identity amidst the multitude of people who also possess their own distinct versions of "I." She expresses a profound awareness of her individuality and the overwhelming recognition that others share this personal struggle with their identities. This contemplation brings her a mix of discomfort and contemplation about the nature of selfhood and belonging.

Plath's imagery of the letter "I" highlights its significance in representing her identity. The structure of the letter, with its strong vertical line and shorter horizontal strokes, presents a confident and assertive self. The repetitive sound of writing "I" underscores her introspection and the intricate relationship between self-expression and personal existence, illustrating how deeply connected she feels to her own unique self despite the commonality of the human experience.