I was reading the Rodale website for recipes and I happened upon their remedies section.  They have some sensible depression remedies.

http://remedies.rodale.com/depression-remedies

I personally like the one, “Make Someone’s Day“.   I try and make a friendly, uplifting comment to someone every day.

Perhaps you are lacking sleep (“Get some zzz’s“).  Maybe you just need to make some space with their “Get Outside” suggestion.  Perhaps you are B-vitamin deficient. 

Try one different suggestion each day for 10 days and see how you feel.