At every stage of being a student and teacher, I asked myself “Does math really have to be so hard?” and “How would I have trained my younger self?” From 2011 to 2021, I solved thousands of math problems, as a student and as an educator. The sources ranged from math contests and olympiads to university textbooks to classic puzzles. In the process, I learned how to tackle questions that I had never seen before, and I taught hundreds of students to do the same. I realized that the real problem was that I needed to not only obtain theoretical knowledge, but also needed to implement overarching strategies and tactics of problem-solving. If you would like to see a synthesis of the mentality that I internalized, sign up for my newsletter and I will email my Master List of Problem-Solving Principles to you! This document includes principles for psychological preparation, initial investigation, intuitive investigation, strategic and tactical rigorous investigation, analyzing a proof, and avoiding common mistakes. Don’t wait to receive these principles!