Lifehack was a systems-level intervention in youth mental health and wellbeing in Aotearoa New Zealand. They represent a new way of working by creating a Social Innovation Lab which is constantly designing, prototyping, implementing and iterating interventions to find the highest impact approaches to address well-being.Over 2013-2017 we grew the capacity of the system to support the wellbeing of young people, with an emphasis on co-design, prevention and capability building.