Ever get almost done with something, but it seems kind of imperfect.
And so you say, "I'll just sit on this for a couple days..."?
Stop doing that.
Get it to complete, and mark a note on your to-do list or calendar to review and decide to improve or not. Having the option to be done with stuff is awesome.
// full disclosure: I did the "sit on this a few days" thing and it's now 3AM a week later and I'm forced to finish this. Worse yet, I even knew I was doing the "sit on this for a few days" thing and it was dumb. And yet, here I am. Don't sit on things for a few days. Get them done enough ASAP.