Most of all mistakes. Don’t fear mistakes. Don’t let yourself be too self conscious or rejection. Take your shots. Weigh your mistakes, and try not to roll the dice too much on the ones that can ruin your life or cause major set backs, but the other ones? The ones that just hurt the pride a little or might set you back just barely? Go for it. Listen to older people, even if you don’t do what they say, you can learn from their mistakes and use their experiences to guide you so that you don’t have to repeat things. Be young, have fun, don’t worry too much. You’ll grow and change a lot over the coming years. Go with it and just figure out who you want to be and stay true to you. The rest sorta itself out.

Be responsible

Make sure to tell the truth when going on adult websites and say you're 18 and up :)

Hibernate if you can..And Happy 18th

Well, in my country, drink until you drop

Don't stop learning. Always improve yourself, and help those around you to do the same.

Join the Army

Thanks guys! You’re all awesome, and I’ll take your advice into great consideration.

In the future, don't wish people early birthdays. It's bad luck.

always ask for her/his age before sex

For extra insurance, ask for their ID too and take a picture of it

Ask them for their birth certificate and passport

Talk to their parents to make sure they're 18+

1. Dont buy tobacco for others. It's your ID, dont risk it
2. If you go to college get your General Education classes done first!! Trust me.
3. If you havent learned how to do your taxes yet, now is the time to learn
4. Work for retail/fast food for at least 6 months

Gotta agree with not buying tobacco for other people. Don't do it.

Got it, no tobacco or any drugs.

In that case maybe avoid the Army...

Idol is such a trashy song and no one can change my mind

Wait
Are you talking about the army or the fandom?

The actual US Army. Tobacco and alcohol are the drugs of choice.