i awoke in the middle of the night, thinking, "i really need to alert emily about teenagers!" even though you still have six or seven years until that time, it will help you to keep this in your cap until then.
many of our friends parented with the goal of helping their kids to make only good decisions, which is a fine aspiration. unfortunately, it is like wishing for an ocean and beach to miraculously appear in your backyard!
it is inherent for teens to make foolish and dangerous choices, because they think they are indestructible.
if you can accept this now, you will parent it better then. when they slip up, try to encourage yourself with the truth that they rarely do it to hurt you. we know this is true, because, honestly they don't think about their parents often. :)
another comforting reality is that while they are still at home, they have you to pull them up by their bootstraps, love them, forgive them, and correct them. every poor choice and consequence will hopefully inoculate them from repetition after they leave home.
your gracious yet firm response will, more importantly, rebuild their fragile egos with your unconditional love.
pray psalm 91 over them each day and trust that the One who holds them in the palm of His hand
will keep them from serious harm.