Fuuuuuuuuuuuuuuuuuuuck I have a deadline to meet and I have zero motivation to get shit done

Make the motivation that you'll get it shit if it isn't done. When I'm lacking productivity, I try encourage myself with self reassurance. "it won't take long. You can do it. What? This is nothing.". Well, that and 50% being that it will be to my detriment if I don't get it done.

For me, deadline is the motivation. It gets more effective as the deadline approaches

For me, earning is a motivation to finish

You don't need motivation, you need to look stupid after the deadline. Trust me, it is the best motivation for next deadlines