In this document we present a selection of methods for diagnosing and facilitating change and business model innovation towards circularity in organisations and business ecosystems. The selection resulted from a combination of factors considering theoretical investigation and practical managerial experience, which aim to provide tools that are theoretically sound, easy to use, and suitable for bring about organisational changes particularly towards higher degrees of circularity. The main aim is to help organisations move away from “management of unsustainability” lock-in, and transitions towards more sustainable configurations, a shift from “doing things better” to “doing better things”. We have selected 15 diagnosis methods, 9 methods for facilitating organisations or being used by organisations, and 9 methods for facilitating business ecosystems creation and development or for business ecosystem leaders to use. Not one of them is individually more effective than the other ones. It is recommended that their selection is a task that should be carefully planned and executed preferably with the support of change management experts who would coach companies in identifying their “root problem” of an unsustainable system they are in and carefully combine the methods that are the most suitable for their specific organisation and context.