There are all kinds of self-assessment tools online that you can start with. Some of they may cost money, some are free. I found a good article on Monster.com that recommends some tests https://www.monster.com/career-advice/article/best-free-career-assessment-tools
Being a people-person goes a long way. Be inquisitive. When you meet adults, ask them what they do for work. If it's something you're interested in, ask them more--how did they get into the role? What education and characteristics did it take to get into the role?
Look for ways to volunteer in your community--it exposes you to all kinds of different people. If you want to eventually build, rent, and sell properties, find a local Habitat for Humanity or a similar non-profit organization that's making a difference in peoples' lives and volunteer there. When you do that, talk to the other volunteers--learn more about what they do professionally.
Importantly, stay focused in school and talk to your guidance counselor to get some additional input (they're there for you - be proactive and schedule a meeting.) If you're interested in technology, see if your school can schedule a visit to local tech businesses.
Keep learning and good luck!
Annette recommends the following next steps:
- Read this https://www.monster.com/career-advice/article/best-free-career-assessment-tools and take some assessments
- Look for places to volunteer - and talk to people!
- Talk to your guidance counselor