What's the longest you ever been stuck on a story?

I've had the idea in my head since I was like five. I actually started writing it when I was 13. Still working on it to make it just how I want it.

Going on four years. The way I see it is the more time spent on it, the more successful it will be. Good luck!

So far, three months.

My entire life. Till now, I still have unfinished stories I started as a 3-year old.