I am always impressed with how powerful incentives are for most students. And the benefits of being clear about what you expect of them. If you are clear, then most will deliver; or at least do their best given their constraints.
I am also reminded how important it is not to take anything too personally. Students are busy, and will not do something unless they can clearly see the benefits. If they push, I need to push back and be firm.
Of course, most is not the same as all.