How am I supposed to live?

I know there’s not a specific “guide” on how to live but I’d like to hear suggestions. I am almost 18 and have already graduated high school. I will be taking 1 college class during the fall. But I would also like to have a job, the problem is that I have really bad anxiety. I’m a very quiet and reserved person, and don’t like to go out often. I know that’s not good for my social life.

To get to the point, how do I get a job?, how do I get better at socializing?, and how am I supposed to take care of myself?

I never saw myself living this long so I never prepared myself for anything. Sometimes I still feel that way and begin to overthink. Which is why I came here to ask for help and suggestions

Thank you ❤️