Being objective is best here. If you pick a career that is too narrow, you risk having no market for it. However, you need to start preparing sooner than later for college, since even basic jobs these days require college.
One thing is sure. If you become one of Jehovah's Witnesses, you will find yourself going door to door pushing magazines and books for free most of the day. They deliberately conflict with just about every career that is worthwhile, and they do not like people to use independent sources to research anything. Instead, they want you to be ignorant. Of course, it also means being too poor to support yourself or your ministry properly. That is not the way to go.
Research the options. Find out what you are good at, and what you enjoy. Then, do the basic research on it. You can find career options online to get a sense of what is out there. Then, you will have something to go by when you need to make decisions on subjects to take in college.