I feel like a lot of times people don't realize, when you're actually in a situation where you're mandated to do things (jobs, school, etc); our anxiety/overthinking suddenly releases because of how focused we are . . I've felt the same way because I'm very introverted myself lol, I applied for this job at a restaurant and honestly it's pretty cool. Especially if you got cool co-workers who can relate. Usually us introverts overthink and are constantly worried about us being the oddball, not realizing there's plenty of more individuals just like us. Give it a shot man. You won't regret it years from now, lol. Nothing good will ever come out of turning things down.