Winter really brings me down. I arrive at work - it's dark out. I work indoors in a windowless office for 10 hours. I leave work - it's dark out. There's something wrong with going through a full day without a single moment of daylight. Prior to my current job I worked 2nd shift and it really wasn't all that bad. The big negative was working every Friday night. The big positive was never having to use an alarm clock. Every single day for 2.5 years, I woke up when I felt like waking up. That is a great thing.