A system for monitoring and modifying an emotional state of a subject includes at least one sensor to sense data indicative of a plurality biometric features of a subject that are related to a current emotional state of the subject. At least one stimulation device is configured to generate a stimulus to modify the current emotional state. A processor is configured to receive the sensed data, to use the sensed data to calculate at least one metric that is indicative of the current emotional state of the subject, to identify a value of the at least one metric that is indicative of a predetermined target emotional state, and, when the indicated current emotional state is different from the target emotional state, operate the stimulation device to generate a stimulus that has been previously identified as facilitating changing the current emotional state to the target emotional state.
