Game jams squeeze a whole game into a weekend. Perfect isn’t an option, so people finish things.

A deadline short enough to be absurd removes the option of endless improvement, and that is the point. When perfect is off the table you choose quickly, drop whatever is not essential, and arrive at something whole. Finishing teaches what polishing never does, because only a finished thing shows you how the parts work together. Most people have far more unfinished work than unfinished ability.

Give yourself a weekend and a tiny scope, one level, one song, one page. Tell someone the deadline so it is real. Show them the result even if you can see every seam.