A good project does not start with the planning, but with the question why the project is needed. What is the problem? When is the result good enough? Who should benefit from it, and who has to make it possible?
From there I bring structure: clear goals, a realistic plan, risks, decision-making and ownership. Where the situation calls for it, I work in short cycles and adjust based on progress and new insights. The goal is not only a project that is completed, but a result that actually lands in the organisation.