I had a webcomic a couple years ago here that I ended up stopping and then completely deleting off Tapas, haha (although it's still up in other places...). It was due to a variety of factors, but a main one was that I had changed a lot as a person since I had first started it, and so my original goals for my story were completely alien to me, in a way that it felt unsalvagable. I don't regret the time I spent on the project, since I learned a lot both in terms of skill/workflow and about myself and my tastes, but I also don't regret dropping it at all. Since then I've mostly focused on short comics and projects to work my way back up to doing long things again. I have a lot of failed projects, which I do feel a little sad about, but overall even the failed/unfinished things I feel like end up informing my work overall.