Over the last couple years I’ve developed a strategy for dealing with exactly that: Make the Job Smaller. Have the energy to do a little bit of something productive, but the tasks facing you are huge? Don’t even try to finish a whole task. Instead, consider that your assignment is simply Making the Job Smaller. Folding one item of clean laundry out of the pile and putting it away = success. Answering one email you’ve been putting off = success. And so forth. If I try to tackle the entire pile of whatever, it’s overwhelming and I feel like a failure. But Making the Job Smaller is not so hard! I can do that! And then I get to feel better about myself for accomplishing something, however tiny, plus now the job facing me is slightly less huge and scary.