"Turn your thoughts into a race—it can lift the blues in minutes, says Princeton University psychologist Emily Pronin, PhD. For example, when your mother-in-law is driving you crazy, give yourself 30 seconds to make a list of all the ways she's been helpful to you in the past—you'll feel better fast. (If nothing nice comes to mind, quickly jot down other ways she bugs you; speed thinking negative thoughts can still improve your mood, Pronin found.) Researchers believe that rapid thinking may release feel-good brain chemicals—or it could just be a helpful distraction. "
And there are some things I've never heard of on this list.
For example, they recommend looking at pictures as something that will give your mood an 11% mood boost. I had not heard of that as a mood booster, thought it makes sense. I might want to stay away from this one during periods of grieving but it might help you to look at happy pictures of times past.
Another one they mention that I had not heard before is chopping vegetables. Interesting. Presumably, not onions. :-)
Go read the article. Prevention.
My hope is that you and I will internalize these lessons and learn to use these coping skills so that our winter blues or all the time blues or clinical depression will be a thing of the past. Hang in there.