I had several exceptional Math teachers throughout my education, but the piece of advice that stuck with me the most is:

"If you're not sure what you want to do with your life, study Math. Why? Because Math teaches you how to think."

The skills I learned studying Mathematics have been invaluable, the Math that I currently am able to recall is abysmal.

The author did a great job calling this out succinctly: Mathematics is an excellent proxy for problem-solving