Well, he recommends to stick to a specific schedule (having a walk at 21:30, going to sleep at 22:00, waking up at 06:00, etc) The exact times do not really matter, but sticking to a specific time schedule is problematic IMHO when you have a family because of the non-determinism introduced (especially by the kids).. Unless everyone in your family agrees to follow (and stick to) a similar schedule..