The unfinished corner can reveal where attention ran out before time did.

Work often stops for reasons that have nothing to do with the clock. The skirting behind the door, the last shelf, the paint above the frame: these get left because interest thinned, not because the day ended. An unfinished corner is a record of where care gave out, and it tends to be the part nobody would have seen. What you leave undone quietly describes how you were working.

Look at something you finished recently and find its weakest corner. Ask whether you ran out of hours or out of attention. If it was attention, do that last small piece now, while it still takes minutes.