I think I have SAD

Or Seasonal Affective Disorder.
http://www.mayoclinic.com/health/seasonal-affective-disorder/DS00195/DSECTION=symptoms

I have the following symptoms from their web site:

• Loss of energy
• Social withdrawal
• Oversleeping
• Loss of interest in activities you once enjoyed
• Appetite changes, especially a craving for foods high in carbohydrates
• Weight gain
• Difficulty concentrating and processing information

Which means I really need a vacation to some place warm and sunny!