David has over 15 years of work with drug addicts, including as an outreach worker, frontline worker, community therapist, and parental counsellor. He also has 3 years experience working in a halfway house, and is now participating in change of Czech social system to reduce and end homelessness in the Czech Republic. In addition to his training in Housing First, David is also a trainer of motivational interviewing, Buddhist meditation, psychodrama and focusing.