Psychotherapy, and in particular hypnotherapy, affects the brain, as well as the thoughts and beliefs processed by the brain, through the process of neuroplasticity and neurogenesis. The brain is constantly adapting to new information and new circumstances, e.g., modifying patterns of connection between different parts of the brain and reorganizing neural pathways and functions (neuroplasticity), as well as developing new neurons (neurogenesis). We will be looking at very specific ways that hypnosis and hypnotherapy influence these changes, and at some of the dysfunctional conditions that they can be helpful in managing or repairing, such as addictions, ADHD, autism, chronic pain, depression, and sleep disorders. First we begin with an overview of the unconscious functions at work, day and night, in our physical, emotional, and mental life: resting-state networks, especially the default mode network; vagal nervous system and heart-rate variability; ultradian and circadian rhythms; reward and stress networks; and the mirror neuron network. The default mode network is vital to our sense of self and sense of agency, moral sensitivity, organizing memory to reconstruct the past, simulating the future such as inner rehearsal and daydreaming, and imagination such as free association, stream of consciousness, and taking other people's perspective. We provide suggestions for "brain-friendly" psychotherapy. "[M]ost people do not know that most mental processes are autonomous." 1 "All mental states have correlates in the brain and any change in our attitudes, beliefs, cognitive styles, preferences and modes of interaction must therefore be accompanied by changes in the brain." 2 "Whether it is called symptom relief, differentiation, ego strength, or awareness, all forms of therapy are targeting dissociated neural networks for integration." 3 A fundamental assertion of this article is that "hypnosis can change the nervous system for the better." 4 Hypnosis affects the brain, as well as the thoughts and beliefs processed by the brain, through the process of neuroplasticity and neurogenesis. The _____________________________ * 3716 – 274th Ave SE Issaquah, WA 98029 800-326-4418