Many dogs use chewing as a way to calm themselves. Puppies who are teething chew to relieve pain. Provide an object they can safely gnaw on, such as a
chew toy or a bully stick.
One side note, do not give your pup an old shoe or couch pillow to play and gnaw on, as this sends conflicting messages that these types of objects are allowed. Your faithful friend cannot distinguish between your favorite new heels and old worn-out boots.