Whenever I try to think of a story I always fall into the pit of the stories I've never finished. I have stories that I never finished because I didn't know the ending or for whatever reason. I thought I had moved on from these stories but whenever I try to write they come back to me opposed to new original ideas. I feel like they are haunting me. They won't let me move on to new stories. I don't know if this happens to anyone else, it might just be me because I'm a perfectionist, but any advice would be helpful, thank you.
Just firing off ideas here... Rewrite the unfinished story. In ones without an ending, write a ton of bad endings until you write a good one. Hold onto the unfinished stories and try to get back to them every once in a while, see if you can finish them.
The only advice would be to finish the stories, especially if they're standing in the way of you moving forward with other/new stories. Most stories have a primary conflict. Decide how the conflict should be resloved and then write the ending to reflect that resolution. Set it aside for a short time. Work on finishing one of the other incomplete stories. Then, go back to the first, edit/revise/polish and send it off to an appropriate market/seek a publisher (or self publish if that's your preference). Then revise/edit/polish the other story and send it off. Pick another pair of stories, and repeat until you've got them cleared up such that you can move forward. Good luck.