With that joke aside - please read the following carefully. Most people have a negative attitude when it comes to math but have no idea that it is the easiest subject one can come across and all someone needs to do is have some continuous practice. There are some problems that have baffled the best of the mathematicians in the world.
AP Calculus AB is also challenging but covers less material and moves more slowly.
You really have to think way far outside of the box to follow what is going on in math logic. Hardest aspect for me was when I took an advanced mathematics course at high school when I was 15 and was introduced to the concept of isqrt-1. In a dynamical system a fixed rule describes the time dependence of a point in a geometrical spaceThe mathematical models used to describe the swinging of a clock pendulum the flow of water in a pipe or the number of fish each spring in a lake are examples of dynamical systems. Proving godels theorems and learning recursion theory was the most challenging thing I have ever learned in my entire life.