A contraption, but it works

Libra

It's one of those difficult days when anything can and will happen. Someone you were relying on might let you down, plans could be changed at the eleventh hour or a machine could go on the blink. To make matters worse, your energy levels are very erratic, so you feel full of beans one minute and ready to go to sleep the next. Don't make the situation worse by eating foods that give you a high followed by a slump.