At work, the busier I get, the easier it is to do something in advance and call it done.

Usually, if I stop at 90% and absolve myself of responsibility for anymore creative thought, I find plenty of other people willing to help me with a myriad of improvement suggestions; whilst I can find creative new things to do and leave them to it. For example, if I reference something and leave out the source, someone else will often notice and tell me about my "mistake". If I'm lucky, they'll send me a link without being asked.

Since these people insist on making all their improvement suggestions even when I've honed my own thoughts to something I'm 100% happy with, I am quite clear that a finished piece of work isn't worth the trouble.