1) Jorgen Leth is successful in my opinion with the fourth film the most even though he hated cartoons. He struggled with all of them though because of the obstructions. Granted, being successful and finishing a project are to different things.
2) I think the obstructions are stumbling blocks for the time being, but in the end they make him a better more creative person for the long run.
3) This film could make my work more creative if I had someone or myself lay out a list of certain rules to follow. It reminded me of an artist whose name I forget, but the artist would make directions, or in this case obstructions for other artists to follow/create. Seeing as how we are all complex individuals, although we'd be given the same instructions, the resulting piece would come out different from one another.
