My first editor at Abingdon Press told me, she would polish my manuscript to a high sheen. Do not be afraid of an editor's pen.
If you are not yet published, listen to constructive critiques. A constructive critique will give you guidance on how to make your story better in content, narrative, dialogue, etc. Don't shoot me, but if all you get in a critique is don't use 'was', 'ing', or 'ly' ever, or 'you broke a rule', you are being critiqued by inexperienced writers.