Mathematics is really difficult, but as long as you are confident to find a way to learn mathematics, you won't find it difficult. First of all, do you think math is difficult? If you find it hard to estimate that it is difficult for both of you to learn well (▽), I estimate that you should be better at math, otherwise your friend wouldn't tell you so. You can give him the math method of your school. Is math really difficult? Not necessarily. You must learn how to understand the most basic textbooks, which is the most basic. The foundation has been laid, and the basic exam is 60 to 70 points, and the medium difficulty is in the third place. Break down the problem and solve most of it. Then, it is good for you to have more contact, do more different questions and set up your own wrong book.