Not only is it NOT a sign of weakness for an author to enlist the services of a good editor, it is very likely the thing that will determine the success - or failure - of your book.
Felicia A. Sullivan
INTERVIEWS WITH YOURS TRULY
Interview on Zombiphiles.com: http://www.zombiephiles.com/zombies-ate-my-brains/taking-on-the-undead-with-a-pen-felicia-a-sullivan-editor-interview
Interview on ZombieAuthor.com: http://zombie-authors.blogspot.com/search/label/Felicia%20A%20Sullivan