Safest thing is to not let yourself get to the point where you don't feel like doing anything. When you feel like this get up and start doing something really fun!
We break from Depression to share wise words from past times:
Today is: 19th August (GMT), in history on the 19th of August, 1903 AD the following birth happened:
Claude Dauphin: Corbell, France -- Actor (April in Paris, Deported)