In this work the author analyses Fernando Pessoa’s poem Autopsychography, considering both its stylistic and formal aspects. The Portuguese poet manages to take the reader into the land of psyche, on the verge of thought formulation, moving between heteronymic discourse and the need for fiction. The paper is about tracking movements of thought internal to the poem itself, in the articulation of the poet’s experience as he meets the flux of his own work. This flux gives birth to a metaphorical image, resulting from the activation of the transcendental function, according to Jung’s theory.