You're viewing a single thread.
I turn 18 in around a month... I guess I'd tell him to take care of himself and keep working on being less anxious, though I doubt he'd actually do it.
Take care of your teeth and learn as much as you can. Your teeth don't heal and are never considered in health care, and there really isn't such thing as irrelevant knowledge.
I have braces right now and it's very uncomfortable to have anything stuck in there, so I do take extra care of my oral health at the moment. Fortunately I'll have free dental care for the foreseeable future, given that I'm going into uni and then healthcare (this is how it works where I live).
Agreed on lifelong learning, I want to (somewhat) be able to keep up with the world changing as I get older.