Methods, systems, and devices for adjusting a messaging tonality of messages delivered to a user are described. The system may acquire baseline physiological data measured from the user and generate one or more messages based on the baseline physiological data and in accordance with a first messaging tonality. The system may acquire additional physiological data from the user based on providing the one or more messages. In some cases, the system may perform an evaluation of the first messaging tonality by comparing the additional physiological data with the baseline physiological data and select a second messaging tonality from a plurality of messaging tonalities based on the evaluation of the first messaging tonality. The system may generate one or more additional messages to be provided to the user in accordance with the second messaging tonality based on selecting the second messaging tonality.