As a writer, it’s important to me to create the best possible work I can. In order to do that, I need an objective pair of eyes to comb through the manuscript, picking out character agency, weak plot points, and grammar. There are methods for doing this yourself, but I don’t recommend it, as you may overlook details (or lack thereof) that someone else will find.
When going over your editor’s notes, make sure you have that important tool – coffee.
Whether it’s a novel, a script or a short story, every writer will create a not-so-great first draft. In order to shape it into something better, a writer then turns to an editor for assistance. In some cases, an editor can help with a story that has stalled out half way through.
When I was working on my current novel, I stalled out in the middle. I’d already cannibalized a short story into the novel, which gave it layers I hadn’t expected. However, I had no sense of what was going to happen next. There were a couple of scenes written out, but I had no idea of where to put them, and no clear, definitive, final wrap-up to the story.
I was stuck, in the truest sense of the word. I needed help. So I found an editor who helped to jump-start a new direction for the Narrator and the story itself. In two five-hour editing sessions, I had gotten past the block and found myself at the story’s end.
How did this happen? I set aside my ego and listened to what my editor had to say. There were points I didn’t necessarily agree with, which pushed me to find a way to make those points work within the story. If I was successful, they stayed in – if not, I ultimately took them out. It was a difficult thing to do, excising portions of my novel (particularly if it was a character I liked), but that’s what the sequel is for. 
Ultimately, as a writer, if I want my work to improve, I need to pay attention to my editor, who also acts as my mentor. The relationship between an editor and a writer is symbiotic – when the two click, the work is a joy (even if it’s still frustrating). When it doesn’t, thank the editor for their time and effort and look for someone with whom you can develop a long, professional relationship with.
Every experience with an editor, even one that doesn’t work out, is a positive one – it helps you focus on your work, your voice and your goal.
That goal? To hone your craft and create your best work.
A blank page is both exciting and terrifying.
Where will that first word lead?
 The character in question went through nine name changes and switched nationalities – if he hadn’t been so endearing, I’d have written him off long ago.