1. A method of treating patients with mood and/or anxiety disorders, comprising: implanting at least one system control unit in the skull or the brain of the patient, wherein the at least one unit controls the delivery of at least one stimulus to at least one area of the brain affecting mood and/or anxiety disorders; applying the at least one stimulus to the at least one area of the brain in order to at least in part alleviate symptoms of the mood and/or anxiety disorder of the patient being treated, wherein the at least one area of the brain is selected from at least one of the anterior cingulate gyrus, the dorsal prefrontal cortex, the dorsal raphe nuclei, the median raphe nuclei, the locus coeruleus, the ventral prefrontal cortex, the thalamus, the medial thalamus, the cerebellar vermis, the amygdala, the orbitofrontal cortex, and the caudate nucleus.