Do these two things –

• Reward good behaviour
• Punish bad behaviour

Avoid doing these two things –

• Reward bad behaviour
• Punish good behaviour

An example of the 4th: the dog is having fun in the park. You call it over and it comes like a good dog. Then you put the leash on it and take it home.

An example of the 3rd: the dog begs for food and you give it food.

An example of the 1st: the dog gives up begging, slumps down in resignation, and then you give it a treat.