Why does everybody want to change the world around them and not just adapt themselves to the world, e.g.:
'To earn better grades, students should sync their biological rhythm to their class schedules.'
While some might argue that it is not easy to do that, I would respond that such skill is invaluable for your life ahead. Granted, not every job requires such a skill, but many do.
From my own experience, I can tell that exercising discipline to go to bed early paid off for my work experience and there are few things I hate more than being tired at work: While work hours wear on, you are not getting done anything either.