Training a Lhasa Apso not to bark all the time requires patience and assertiveness, but it can be done. Be prepared to set consistent boundaries for your dog. You can't let him bark at the delivery man and then scold him when he barks at your friends. He doesn't know how to tell the difference. Keep in mind that dogs bark to communicate and you shouldn't expect your furry friend to stop communicating altogether. However, you can take control of excessive barking and minimize the disturbance to you and your neighbors.