I agree with jelly-bean. Focus on very small goals. Today i will spend ten minutes cleaning the room. Then the next day I will take a shower. Then the next day I will brush my teeth and do 15 minutes cleaning the room. Whatever it is use small baby steps. You will be amazed at how much better you feel about yourself for just accomplishing a few things even if you have to force yourself and are still depressed. Even if I am deeply deeply depressed if I can take care of the small responsibilities I have like paying a few bills and not ignoring the mail, I feel so much better about myself.

When in that state I can't think about the big picture. It is to overwhelming. Small steps each day toward a bigger goal. Most important to me is to try to keep treating the depression. If my depression is not successfully treated I may have to settle for lesser goals. I still always have choices even if they are not the best ones. Always examine what choices you do have no matter how small.