A cognitive state alteration system includes at least one of: a wearable element and a non-wearable element to measure state or activity of a subject and to provide at least one stimulus to the subject, a storage unit to store session scripts for cognitive state alteration processes and a cognitive state alteration unit having a script handler at least to run session scripts associated with a cognitive state alteration process selected by the subject from the storage unit and to update the scripts according to an analysis of the readings of the at least one of: the wearable element and the non-wearable element.