I am applying to math Ph.D programs from U.S universities for next fall.
Frankly, I was not a good student during my Bachelor's degree. Instead, I did many things towards finding my real dream: what I really want to do. After I got my B.S in math, I did teaching in academies, and learned some skills for analyzing football statistics from a private academy. (Actually, I was crazy about football at that time, so I wanted to get a job related to it.) After that, I met a consultant and he advised me that it would be much better to utilize my major.
So I got back to my university to get my Master's degree, and I think I did quite well. I want to research on AI and math. My thesis is about graphs, which is related to expressing our body through graphs (to research related to football, too). I got my Master's degree in August this year and am now preparing for applying.
I wonder if I should write the story above, to compensate for my lower B.S. degree and to emphasize that now I am quite a motivated researcher and totally different person than about 10 years ago. Also, in Korea, there is an "age stereotype" in society. I am now 31, I am worried about the committee thinking I am too old to study.