Chuck Spezzano is not a psychologist -- "Even Chuck himself says that his Psychology is a hoax" (Desktop version of this blog is more detailed)
"Psychology of Vision and Oneness" is listed among the numerous New Age therapies, 2012 http://www.balens.co.uk/media/53359/holistic_therapist_magazine_2012.pdf
[Update June 20, 2021: dead link]