Well we turned the clocks back an hour this week, and, if you're like me, your energy levels are gradually dwindling alongside the decreasing daylight hours. A note about seasonal depression Seasonal changes in mood and energy are natural and don't necessarily need to be pathologized. That said, as with just about anything there is a spectrum of experience here. Some people experience slight seasonal changes that are mildly annoying, while others experience debilitating sympt