How do you stay motivated?

So it's been about two months since I've done it. I aim to open a market stall this autumn, and I have a backlog of things to do - all pretty small things that wouldn't me too long. I've pushed myself to start one of them and instead of doing it a few hours a day, I can sometimes get an in hour in over a week. I just don't have the motivation to dice back in and keep going, but I want to! I'd love some tips about it, or about you keep yourself going with it x