Now that our children are grown and gone (and 40% of them are off the payroll woo hoo!), I feel environmentally irresponsible to use the dishwasher except for the largest and biggest messes.
I purchased a wonderful dish drainer which boasted super cool elements like expandable shelves, dedicated cup hooks, and a tubey thingamajig where the water drains directly into the sink. Brilliant!
Friends, I could not figure out how to put this thing together.
(Directions, you ask? Yes, they were included. Yes, they made little sense. "Fasten D onto the back of B"—which part is which and which side is the back? "D can be placed in 3 directions of B so please adjust D in a proper direction"—OMG, seriously? Which is the proper direction? And so on.)
I attempted to assemble the rack. My first result was clearly incorrect, so I took it all apart and tried again. And again.

Image: wrenches
On my fifth try, it kinda sorta looked like the drawing on the box, so I, sweating with victory, called it done.
The next morning, however, I saw from across the room that the drainboard rested on the incorrect lowermost part of the shelf. I disassembled the entire contraption, started again, and voilà! Perfection at last!
What does this have to do with editing? Oh goodness, you know the answer.
Be patient.
Approach your task with the right tools for the right step in the process. Don't skip to proofreading when you haven't done a developmental edit.
Go over your work again. And again.
Then forget about it. Go about your life.
When you return to your project, having allowed enough time to pass that your vision is clear and your perspective fresh, whether that's an hour, a day, or a week, you'll create something functional and, dare I say it, beautiful. Get that distance at all costs.