Dear me in 2002;
-Become cold-hearted and close yourself to most people. This will save you a lot of pain.
-Stop getting amused so easily, things aren't nearly as meaningful as you think they are.
-Everyone looks out for themselves first, stop living for the sake of others.
-Start taking math and science more seriously.
-Do not sleep with your best friend's girlfriend. She is a slut and you will end up as the bad guy in everyone's eyes.
-You could have gone out/slept with at least three times as many girls in your junior/senior year of high-school if you had just asked them out.
-Practice playing the guitar more often.
-If you plan on heavy exercising and going anorexic, at least get some vitamins.
-Start thinking seriously about college. Apply early, think UF.
-Stop dating 16-year-olds as soon as you turn 18. They will annoy you even if you think they're cute.
-Never become friends with that gallego, he will turn your friends into drug addicts and you will never see them again.
-Don't drink and drive, but if you do, don't sweat it; the insurance will take care of the cars and the case will be dismissed on technicalities.
But most importantly, do not waste three years of your life with that person. Even after you sacrifice everything you have for her sake, her parents and her religion will never allow her to be with you. You will waste the best years of your life, and all that will come out from it is mysery and the feeling of loss that will stay with you forever. You will be stuck in an endless cycle of weekend hookups and never caring about anyone or anything anymore.