(this is a double post because I think you might have left the other thread)
I built my garden by hand, but saying "one foot." Every day my goal was to turn over one foot of a raised bed. Between the rows I put down newspaper, dog food bags, anything that would block weeds, and anything that would hold it in place. Most days I did more, but in a couple of days I had enough space to plant lettuce.. then spinach, then carrots... gave me a real feeling of control over what was going on.
I found that really regimenting my day also helped to keep things moving, on track, and kept me from getting too overwhelmed and depressed. As did breaking what seemed like an impossible task (turning over a garden by hand) into little manageable bits. I actually closed doors to rooms in the house rather than face them all at once. Every day I'd deal with one small piece of something. It took a while, but it did start coming together.
But the most important thing is to not get too tired and run down. It is the best advice I can give you. If you were lost in the woods, the shortest way to turning a situation potentially fatal is to exhaust yourself. So take a break a few times a day to sit down, have a pot of tea, nibble on something, and just sit. It will help keep you motivated and from collapsing! If you start feeling too overwhelmed and shakey, chances are you need to take a time out, drink something, eat something, and just breathe.