Why Your Brain Won't Let Go
You actually remember incomplete tasks better than finished ones because your mind hates an open loop. This mental itch pushes you to keep working until you reach the finish line.
Known as the Zeigarnik effect, this phenomenon explains why our brains hold onto unfinished business with such intensity. Once a task is done, your mind clears the mental clutter, which is why you might struggle to recall the details of a project you just completed. Conversely, interrupted work sticks to your memory like glue. Many writers use this trick by stopping mid-sentence to ensure they can easily dive back into their flow the next day.
Source: Zeigarnik effect