Sometimes it’s not good to work with all your might. If you use up your energy on that one task, you won’t be able to do anything else.
I’m a person who strives for perfection, so when I have a lot of tasks like that, I’m exhausted. Here’s another soccer analogy; Suppose you play with 120% effort every match in the tournament. Then, even if you make it through the preliminaries, you will probably be eliminated in the finals at the early stage. I feel the same way about entrance exams.
When I have time, I aim to raise my level, and when I do a task, I want to process it at about 80% ^^).