welcome to the future, it should look familiar since it is a repeat of the past...

 Let go of the bad and let the good overflow within your life. Don't let countless losers take your joy away from you.

 Study hard in high school! Do your homework, and work hard- you would never believe how smart you actually are. Don't give up!

 Focus on your studies. There is a time for everything.

 Thanks for waiting two years for that boy, even though people called you silly. We're happy now. :)

 Today might be a terrible, but tomorrow could be the best day of your life, you just gotta get there.

 Do not go back to him,the one you really love will return to you.

 Don't sleep with a guy right away (or many guys right away) and think that a relationship will come out of it. All you'll get is disappointed.