Watching Kung Fu movies does not make you Bruce Lee.

 You're still that awesome when you're older.

 You at least live to be this old, so stop worrying and do some crazy shit!

 You know that band you like a lot? You should sit down.

 It's okay to feel awkward everywhere you go. It's part of life. You can be yourself, even if your personality is a soft spoken doormat with a patient streak a mile wide. Also trust passwords to prove you are from the future are silly. Use them for alternative timeline identification. Got that?

 If you hear noises coming from Mom's room, stay out!

 He will leave.

 You will make bad decisions because you don't want your heart to hurt. The life that you will miss out on will hurt your heart even more.