The Playbook for healing environments is a spatial decision-making guide book, containing the spatial strategy to transform De Grote Beek into a sustainable healing environment. The strategy was developed on commission of GGzE, one of the largest mental health organisations in The Netherlands. The strategy consists of four chapters visualising and describing the actions that can be taken over a few weeks, months, years and decades. This is done to highlight the role of time and timing in the positive development of healing environments.