Nicke

Work on another one. A much, much simpler one, if possible.

Play games or divert your attention to another hobby or game for a while until you grab that certain motivation you need.

Yeah, take a break and distract yourself with other things until motivation strikes you again.

Sometimes I find looking at other related things (like if you're drawing, looking at artwork, or if you're writing a story, read a good book) helps drum up that inspiration you need when you hit a wall