Seasonal affective disorder (SAD) is more than just what people refer to as the “winter blues”. Those who have it find it difficult to function in daily life. So, what can you do if you find yourself experiencing seasonal sadness? 1. Increase sunlight exposure (even if it is a scare amount). Consider getting an artificial sunlight lamp. 2. Exercise. This can relieve stress, build energy levels, and improve physical well-being. 3. Take a supplement. Vitamin D3, specifically, has positive effects on mood and seasonal affective disorder. 4. Get a massage. Besides feeling great, it can also improve your mood.