TIP #1: BEHAVIOR IS DRIVEN BY ITS CONSEQUENCES
If an action is performed and the consequence satisfies a need (hunger, thirst, comfort, play, rest, etc.), then the consequence is positive and the odds of that behavior being repeated in the future increase. If the consequence fails to satisfy a need, or is downright unpleasant (hurts, causes fear, insecurity, loneliness, etc.), then the odds of the behavior being repeated in the future decrease.
TIP #2: PREVENTING INAPPROPRIATE CHEWING
Puppies chew to explore their world as well as to relieve the pain and irritation of teething. Mature dogs also need to chew to exercise their jaws, massage their gums, clean their teeth, and to relieve stress and boredom. It comes as an unpleasant surprise to many owners that chewing doesn't end at the age of six months when all of the dog's adult teeth are grown in. Redirect your dog's inappropriate chewing to approved chew toys at an early age and manage him well to prevent access to your stuff. In this way, he'll earn house privileges much sooner in life.
- The Whole Dog Journal
Jeff Dentler, CPDT-KA, CTDI