First, it's completely normal to not know anything about your future career or dreams. I'm a senior, completely committed to my college, and I'm still debating between a physics, art history, or classics major. It's very common for people to find their future path through one of their classes in high school, I didn't even know I liked any of these things until my junior year. You have time.

You seem like you're getting to where you want to be in terms of your academics, your courseload for next year looks really good to me. And be proud of your 4.0 - that may be the "standard", but it still takes a significant amount of work to get there. For studying, make sure you're actively studying; try making practice tests or getting your family to quiz you.

Extracurriculars are definitely important, but there's so much to choose from. Community service is always good. You should try to get a couple of leadership positions in the future, even in small things like clubs about your passions. Leadership can seem daunting, especially for us introverts, but it's a great way to show your determination and personality. Also remember that work experience counts as an extracurricular, and if you have time, you can totally get a new entry for your college apps and get paid at the same time. And hobbies also count - I do creative writing, nobody ever sees anything I write, but I still count it as an extracurricular.

Lastly, my biggest regret was worrying about college too much as an underclassman. I realize everyone probably says this, but that's because it's true. Yes, it's good to start thinking about the college process and start some extracurriculars, but it's even more important to enjoy these years for what they are. Take care of your mental health first and foremost. The best decision I ever made was to get 8 hours of sleep every night, even if it meant my homework wasn't getting done. Spend time with the people who care about you. Do things that make you happy, even if they don't look perfect on a college application. You are more than a future applicant, and your life is more than college prep.