The beauty of a superb piece of  writing (as a gorgeous musical composition) is what is left out–the empty spaces.  A writer does not want to confuse the writer with clutter.  Every thing that is not necessary has been taken out.

You want every word, every phrase, every sentence and paragraph to matter.  I always said that an excellent editor is worth their weight in gold.  It is very difficult for the writer to see their piece objectively.

You always need someone from the outside who you trust for their advice on your written piece.   Sure you need to do everything you can before you submit your piece to someone else.

Nevertheless, at some point you need to present your piece to someone else for their opinion.  You have to be very careful who you choose and when to do this.  You have given your piece your all.

Now it is time to let someone else read it.  Everything that gets in the way has to be taken out or changed.  You want every word to count.  You can not do this by yourself.