You have this kind of psychology mostly because you are afraid of math or not confident enough. So the best way is to overcome your fear of a certain subject.

First of all, you should have a normal understanding or concept of the subject you are afraid of, such as mathematics. This is just an ordinary theme, don't be particularly afraid.

Then the reason why you are afraid of this subject is because you are not very good at science, so you can work hard on your own. If some can't, you can ask the teacher or a better classmate.

Then in this case, you will gradually make progress in this subject, and you will continue to make progress when you see your progress. Finally, it is better growth.

So you are nervous because of your own mentality. As long as you change this fear mentality, it will be natural. So no matter what you do, you must start to change from your own heart.

Hulu's fear of this subject has gradually strengthened his interest in this subject, strengthened his confidence in himself and kept trying to let himself see the results of his efforts, so that your grades will get better and better.