What subjects did you take in school and how have these influenced your career path?
Subjects in school: Physics, Higher Maths, (handy, but not vital, if you wish to pursue a degree - you can still do a cert (NQF Level 6) or Ordinary Degree (NQF Level 7) with pass maths), Agricultural Science, French (a language is a must if you wish to attend most universities).
Advice is to choose courses based on the subjects you like, don't choose a course just because you are told to do a certain course in college. Pick subjects you like and are good at and then make a career choice based on that.