WIP Challenge Check-in, Day 30 -- Tuesday

[linaewen]

Hello on Tuesday!  What kind of a writing day has it been today -- or yesterday, if today hasn't gotten going yet?

•     I thought about my fic once or twice
•     I wrote
•     I did some planning and/or research
•     I edited
•     I've sent my fic off to my beta
•     I posted today!
•     I'm taking a break
•     I did something else that I'll talk about in a comment

Discussion:  How do you know when a story or a chapter is complete?  Do you follow a plan/outline and stick to it no matter what, or do you just have a feel for the right moment to stop writing?