Abstract: Various embodiments of the present disclosure provide a system and method for real-time estimation and changing emotional state of a user. The system comprises a memory configured to store executable instructions and a processor configured to execute the executable instructions stored in the memory, the processor configured to: collect bio physiological data of the user from a smart wearable device of the user, validate the bio physiological data, extract features based on the validated bio physiological data, and train a machine learning model using the extracted features for the real-time estimation of emotional state of the user, and provide personalized recommendations for changing the emotional state of the user.