Whenever someone said something like, "That will never work," he immediately interrupted. "Reframe that," our boss would say. So we did. "There's no way we can get everyone to work overtime this weekend" turned into "What do we need to do to make sure everyone will be willing to work this weekend?" Now you're in problem-solving mode. Maybe you can temporarily move a few people from another department. Maybe you can change your production flow so finished product is pulled, not pushed. Maybe you can work with freight carriers to reduce the number of packages staged in the shipping area at any time.