Elvis once crooned about feeling blue at Christmas time—and we’re here to tell you: It’s perfectly normal to feel that way. There are a variety of reasons why your days may not be merry and bright around the holiday season. It can be the jam-packed social calendar, deadlines at work, the loss of a loved one, sunless winter days, or all of the above. According to the American Psychological Association, 38% of people surveyed said their stress increased during the holiday season, which can lead to physical illness, depression, anxiety, and substance misuse. The reasons given include lack of time, financial pressure, gift-giving, and family gatherings.