When you sit down to a text, you perform triage: You identify what absolutely must be done to make the text publishable, you identify things that ought to be attended to after the major issues are addressed, and you identify the things it would be nice to do, that you would really like to do, but which you are prepared to sacrifice because we are not given in our mortal span to accomplish everything. Sometimes the result of your labors will be Excellent. Sometimes it will be Better Than Average. And sometimes it will be Good Enough. You will learn to live with Good Enough.