​How do you know when you’re done?

Hello, I’m new to the sub Reddit but not to creative writing, but I’m very proud of the fact that as of today I will have hopefully finished my first ever story.

Unfortunately as many people probably understand much better than I do, it can feel really difficult to really determine when I feel like I have finished and given the story enough… like my mind is conflicted between yes this might be the final chapter but also there could always be more right?

Especially with regard to other types of stories like short stories, vignettes, or much longer stories like novels or series, how does an author really know when they’re done with the story and they’re ready to move onto the next thing?

I’d love any feedback, tips, or tricks 🙂 thank you for your time and for reading.