"You try to be supportive through all the emotional ups and downs, but if you're too supportive, they feel smothered. You want to give them the freedom necessary to grow, but not so much that they're left vulnerable--and however you try to do it, you can count on being wrong. Parenting a teenager is a challenge, to be sure. But Eline Snel has some very good news for those facing that challenge: there's a way to stay mindful, present, and yes, positive...