You have put in the time and now your dog is reliably sitting, laying down, holding a stay and coming to you on cue. Chances are that you have done the majority of your training in your yard, neighborhood or living room. Now it’s time to take this show on the road.
A dog that comes when called in from the back yard may not readily come to you when you call him at the beach. Training needs to be practiced in a variety of settings where your dog will be presented with new and interesting distractions. Introduce your dog to new situations while training and he will generalize the behavior. He will understand that “sit” means that he needs to park it, despite what is going on around him.