That old wound only aches when it rains now. Healing rarely looks like a clean finish line.

Getting better is usually a reduction rather than a disappearance. Something that once took up the whole day now shows up occasionally, in specific weather, and then recedes. People expect a moment where it is officially over, and when that moment does not arrive they conclude they have not healed.

Notice how often the old thing actually surfaces now compared with a year ago. On the days it aches, treat it as weather rather than as a relapse. Have one or two things ready that reliably help, and use them without deciding you are back at the start.