Delayed Sleep Phase Disorder: Which Treatment for a Young Man?

A 17-year-old student can't fall asleep, can't wake up, and is falling behind in school. Which of the therapies suggested here do you think would help reset his diurnal rhythms?

The parents of a 17-year-old student complain that he has no energy, is getting poor grades, seems unmotivated, and appears depressed. He stays awake until 3 am and can’t fall asleep even if he tries to go to bed earlier; then he can’t wake up in time for school the next day. On weekends he sleeps in until 2 pm.

Which of the following methods would be most effective for this young man?