This does not sound new so much as they took the label off of the technique. I do agree learning to clear your mind and relaxing is something many people find hard. It is easy when life is good but on a bad day when the wife is fighting with your the children trashed the house dog ate your shoes and the trany dropped out of the car it might be a bit harder. I think good diet hard exercise might take you further then this alone. Yes and if you can a good romp with your spouse can help as well.
Unless your my wife then get your iron levels checked, low iron will prevent good sleep. So remember eat your greens!