My only tip as an university student studying Oceanography and Biology is keep your mind open. Frankly you don't get to choose your research area or what your jobs are, take whatever you can get.
Frankly had I known back when I choosing post-secondary paths, I would have gone with engineering or
trade school.
Also, you haven't even started real "school" yet. The course work is not easy. Give it some time and thought first, don't be so quick to choose your career path at 14. At 14 I was in full honours and thought it was easy as cake and wanted to go into medical...can not say that anymore.