When nothing is wrong I make something go wrong. I do that a lot too. Usually though, I guess, when I do something right before the deadline or do something poorly, I throw it behind me and try to get a headstart on the next thing. For me it's all about momentum with tasks so I'll move to a coffee shop or library and spend the day there working on a bunch of things and won't come back until at least a few assignments are done. It gets really motivating when you get hungry haha.

Best of luck!