Some dogs just refuse to be walked. Once you put that leash on and leave the yard, all they want to do is run full speed ahead in every direction but the one you want. These dogs take their humans for a walk. The dogs lead the way, and their masters (if you can call them that) simply go along for the ride. What is so incredible is that these dogs seem to have no regard for their own necks. No matter much they gag, they keep chugging forward!

Dog Leash Training Teaches Your Dog How to Be Walked
The goal of dog leash training is to change all of that. Walking the dog should be a pleasant experience. Most importantly, the human should be the leader who dictates the path.

All dogs should know the HEEL command. One of the least effective ways to teach a dog to heel is by tugging him backwards and yelling, "Heel!" For some reason, dogs just don't respond to this. You can try this all you want, but there's a strong chance you'll be old and gray before the dog listens.

The right way to do it is to hold the leash really close to the dog's collar, have the dog sit (SIT should be one of the first commands the dog learns), relax, and then move forward. As the dog moves ahead, say, "Heel!" Repeat as many times as necessary, and always reward and praise him immediately after he has stopped. This method works better than yanking the dog backwards, because it conditions him to associate the HEEL command with slowing and even stopping.