Perhaps all that coffee and beer is the problem too much stimulant. By the time it is bedtime you are probably still climbing the wall. In the evening try a soak in the tub, an animated movie nothing too taxing and a snack of milk and cookies. Eating as healthy as possible throughout the day is more beneficial than snacks of junk food to keep you going. It pays to focus on planning a long break away. All work and no play makes Jack/Jill a dull boy/girl.