Legacy-building becomes narcissism when the concern shifts from what you are giving to how you will be remembered — when the audience becomes the future rather than the present, and the work loses its quality of genuine offering. The sign is the insistence on control: over the narrative, the credit, the form of the gift. The legacy that truly lasts tends to be given by someone who cared more about the giving than the receiving of credit.
Each step builds on the last.