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!
A pause from Depression to share infobreak from one historian to you:
Today is: 25th June (GMT), in history on the 25th of June, 1822 AD the following death happened:
Ernst T Amadeus Hoffmann: German writer / judge / composer, dies at 46