Advice on adulting?

GALS! Long story short, I’m 21 and barely an adult. I still live with my parents, can’t/don’t drive, I work 3-4 days a week. No long term ambitions/goals. Or any idea on how to get a pep in my step to be an adult. Many people were thrown into the adulting world young and thrived and I just wanna know what those people overcame to get there. What is some things I can do? Currently learning to drive but that’s all! 😔 why do I feel depressed about this?