When the student is ready the teacher will appear.

"Relax. You are being guided. In fact, the next message you need in the treasure hunt is exactly where you are when you need it. The message may be in the form of a teacher or a lover or an enemy or a pet or a rock or a chemical or a book or a feeling of great despair or a physical illness or the eyes of a person you pass on the street."
* Ram Dass