Jacques has been a leader and innovator in the field of rehabilitation for prisoners since 1997. He is an expert on violence prevention, emotional intelligence, restorative justice and mindfulness. Born from 18 years of listening to the traumas of thousands of offenders and victims, a deeply transformational program, Guiding Rage Into Power (G.R.I.P.), has emerged.

Verduin's presentations make interesting connections between the specific predicament of incarceration and the general suffering of the human condition. His perspective draws from working in-depth with victims and offenders, rival gangs and racial factions, and articulates a methodology that helps transcend the 'Us and Them' fallacy. Besides the US, presentations and trainings have been offered in Guatemala, El Salvador, Bosnia, Italy and the Netherlands.