You know how you can’t tell people anything? They will just look at you like they know something you don’t? Teenagers do this a lot. They are tapping into their own empowerment. Try not to take it personally. Don’t make it a personal quest to break them down or discourage them.
Don’t educate them with all the things that could go wrong. You really don’t know. You don’t know what the a passionate pure intention can accomplish. Don’t make it your job to dampen their spirit. Be the one person who is a go-to for encouragement.
This positive encouragement will endear you to them more than all the sensible advice you can throw at them. Perhaps you are merely repeating the voices that you heard that discouraged. you. If that is the case, the way to heal yourself is to give to others what you did not get yourself.