"no matter what how good you get you can always get better and that's the exciting part."agree or not?

This is a great quote that I really want to obey with. Even though I you get % at the first, probably you won't for the next time. This is exciting, since it depends on the motivation. When you get 100% at first test, at the second test you'll be over-confident and maybe, who knows? ruin the test or something. This is my account for the question.