You spent 18 years learning to navigate a gated world. You will do just as much learning in the next 18 navigating a newly ungated one.
Think about the sort of kindness you would want to treat a younger version of yourself as he fumbled through that learning. Practice treating your new "young" self with that kindness today. It will pay dividends.
That's funny, but I've actually heard that recommended professionally as a legitimate tactic.