This article analyses the proportionality between emotional states and personal activity in Abu Ali Ibn Sina's works. The research interprets emotions as dynamic regulators that can either harmonise or disrupt action depending on their intensity, duration and relation to rational judgement. Using historical-psychological analysis, comparative interpretation and a conceptual scoring matrix, the article presents an integrated model of emotional proportionality, activity productivity and psychological balance. The novelty of the study is the formulation of an "emotion-activity proportionality" model based on Ibn Sina's doctrine of the soul, faculties, temperament and psychosomatic equilibrium.