Personally I gave up on math as a career once I realized all the people who got into top grad schools for math were like international IMO participants, USAMO or equivalent at least, started taking classes beyond calculus in 10th grade, etc. Even though I love it and even have an undergrad degree in it, and maybe could have performed that well if adults in my life nudged me in that direction, the fact that there were so many people who would always have massive advantages turned me off from it.