As a pack leader you need to be assertive but not overly emotional. Repetition and praise are key.

Setting Boundaries
Ownership of territory is very important. A dog who understands that you, as the pack leader, own the space in which he lives will respect your asserted authority while dog training.

Right timing
Waiting is another way that pack leaders assert their position. Puppies wait to eat, and adult dogs wait until the pack leader wants them to travel. Waiting is a form of psychological work for the dog. Domestication means dogs don’t need to hunt for food, but they can still work for it.

Pack Leadership
Establish your position as pack leader by asking your dog to work. Take him on a walk before you feed him. And just as you don't give affection unless your dog is in a calm-submissive state, don’t give food until your dog acts calm and submissive. Exercise will help the dog, especially a high-energy one, to achieve this state.

Calm and assertive
A pack leader doesn't project emotional or nervous energy, so neither should you.

There more tips on how to be a loving pack leader over on Cesar's Way. There you will read about really knowing your pack and timing.

Sometimes your dog is just not in the mood to be taught and for good reasons. Maybe Fido just is not feeling well. These are the times when you have to be a considerate pack leader and a loving pet parent instead of becoming fixated on the rules.