I'm one of those people who will write two chapters of a story, forget about it and then delete the whole story. But I can't have a plot gap or writer's block with my new book because it is my journal. Or diary. Or blog. Or whatever you want to call something that I write down and pour every emotion and memory and sarcasm so I recite my day to you, the public. 
New story ideas coming, but I'll probs write a chapter, forget about it, and then delete the whole story. Hmmm, I'm sensing a pattern here.