14. Open Your Blinds
This may seem like a somewhat obvious thing to do all year around, but it can be easy to forget in the winter because you don’t usually associate sunlight or warmth during this time of year. Open your blinds, especially in the mornings to let the sunlight warm up your house as much as possible. Although it’s not as warm during the winter, there is still sun and it can make a difference in warming a room. Also, the sunlight can stimulate serotonin to keep you happy.