Shared core planning represents the decision-making path that best embodies the trust and alliance that should characterize the relationship between the physician/medical team and the patients/their families, as it respects autonomy and values of both sides. The Clinical Ethics Consultation Service at Pondazione Policlinico Universitario "A. Gemelli" IRCCS, in Rome, uses a decision-making support tool within the consultations, and calls it "Shared Document for Healthcare Ethics Planning" (SD). This document recalls the inspiring concepts of advance care planning and shared decision-making, and it is an effective tool because of some characteristics, such as: the relational methodology, the personalization case-by-case the interdisciplinary assessment, the impact on patients and their families, the processing time, and the benefits connected to it.