If your dog is already stubborn, the scolding and commanding technique might not work effectively as your dog will keep being stubborn, and your sternness will only make it worse. It is better to advise using the distraction of treating methods to the already stubborn dogs. You can, of course, give it a shot, but if you think that things are not coming your way, you must give it up and find other ways. Call for professional help if you are not able to tackle the situation on your own.