He has written prolifically in a wide range of genres, including books on spirituality, self-help, self defence, and martial arts, and scripts for film and stage.

Alongside writing, for many years Thompson was a spiritual teacher and coach, drawing upon his own experiences as a martial artist and of personal problems that he had contended with, which inspired his self-help books.

Thompson produced a popular podcast on spiritual guidance and self-help for a number of years, and in 2016 he presented a TED talk entitled Conquering Fear.

Though he utilises a small core of these techniques as part of his teachings, Thompson prefers full-contact martial arts and combat sports such as boxing, Muay Thai, judo, Brazilian jiu-jitsu, Greco-Roman- and freestyle wrestling.

[3] Geoff Thompson was also the first instructor to name and extensively teach "the fence", a technique in real-life defence involving keeping your hands in front of you in a non-threatening manner so as to protect yourself in case a situation escalates but without provoking violence.