Explore everything
You might already be in high school, or just entering. Either way, you have about four years to explore anything and everything.
Join extracurriculars, start new hobbies, research possible interests, and don’t be scared to try something new. I’m 16 and will be a junior next school year, and even though I still have time before thinking of college and jobs, and life after being a teenager, I wish I had spent more of my time in previous years exploring different interests. I don’t know what that’d mean for you, maybe you’d join theater, write a song, learn a coding language, run a marathon, learn an instrument, research microorganisms, or try out for the soccer team. My point is, there is an endless possibility of things that you can do with your time, so spend it wisely. I wouldn’t go as far to say chase your dreams, you may not know what they are yet, but explore them, and enjoy exploring them.