A small improvement kept working can serve more people than a larger one left unfinished.

Ambition tends to favour the impressive version, and the impressive version is usually the one that stalls. Something modest that runs reliably, gets maintained and is actually used delivers value every week, while the grand plan sits unfinished for years. Reliability is a form of generosity. The people relying on a thing care far more that it works than that it is remarkable.

Look at what you have half-built and ask whether a smaller finished version would help anybody now. Finish that one. Keep the ambition for later, once something is in use and telling you what it needs.