Lost and confused

Sometimes it feels like I’m stuck in high school mentally and I don’t know how to change that. It feels as if all of my classmates are living their life; traveling, moving to different states, driving, graduating college, starting a family and etc. but then there’s me still stuck. I’m not trying to compare my situation to theirs but it’s like I can’t accept that we are grown I guess? I don’t know how to explain this feeling. It’s deeper than how I’m describing it. I’ll come back to this post whenever I figure it out.