This applies to bad habits also. Just because that puppy is so cute doing something, if it is something that you will not be able to live with later in his life, correct it immediately. Untraining those bad habits is much harder than enforcing the good habits, no matter the age. But they are very adaptable. Specially if they are led to believe it was their idea to do what you are trying to teach them.
Mental happiness is also important.
House training is usually a snap. They are quick and eager to learn, though a bit strong minded. With their independent nature, they prefer to think for themselves with a very high degree of intelligence. The best rule here is never have them off lead except in a controlled situation, like totally fenced in areas that are escape proof. The Pharaoh demands an Alpha leader, and if he feels you are not up to the job, he will try to take over command and train you to his way of life.