What if I can’t become a mathematician

What if I can't become a mathematician
What if I can’t become a mathematician

That would be sad, if it’s what your heart is set upon. On the other hand, having a math background will stand you in good stead in anything else you pursue. I recommend the MAA Career Resources Center (bit.ly/MathishCareers) and this site from UC/Irvine (bit.ly/MoreMathCareers). We also have 101 careers in mathematics (O’Neill Stacks QA10.5 .A15 2014). And consider a consultation with the BC Career Center (bit.ly/BC-career). Best of luck!