I am going to answer you with a copy/paste answer I gave someone earlier ;)
Try taking Saint Johns Wort and Vitamin C supplements regularly on a daily basis.
Also, maintain a structured routine, shower in the morning, eat healthy snacks like almonds, blueberries, trail mix, fresh fruit and veggies, avacodos, hard boiled eggs, fresh smoothies regularly throughout the day. Do about 10 minutes of excersize in the mornings, afternoons and evenings, even if it's just situps, jumping jacks or jogging in place. Get a zumba or yoga dvd or go for a 20 minute walk. There are a lot of ways to help train your body and mind. Say your prayers and read the scriptures. Organize a room. Join a moms or playdate group. Talk to your church advisor or a support group. Talk to your Dr or a therpist. I know severe depression needs meds and therapy usually, but this is a depressive funk you can break out it, it just takes a lot of motivation and hard work! I get depressed easily and these are some of the methods that help me.