Mathieu is an artist, therapist, and trainer. In addition to holding a BAFA certification, he has a degree in Educational Sciences and has completed various additional training programs, including Nonviolent Communication (NVC), Psychotherapy, Art Therapy, Philosophical Workshops (SEVE), Internal Family Systems (IFS), and Neuroscience. He is also a singer-songwriter with several music titles and a collection of poetry to his name. Mathieu has created his own show and has been conducting artistic workshops for many years. He also teaches NVC to middle school students and is a trainer for Éloquentia, working with various adult and adolescent audiences. Apart from education and the arts, Mathieu is passionate about martial arts and health.