Of course it's funny to laugh about things our kids have done, or things they don't know, or how they're different from our generation, but complaining about 'kids these days' without actually knowing the pressures of kids these days, is the fastest way to make you seem out of touch.
Don't carry too hard of a class load but take all of the honors classes you can get. AP classes are not worth it but also extremely valuable. Be a multi-sport athlete but also only play one sport all year long so that you can really perfect it but don't only play one. Make lots of friends but don't worry about making lots of friends, just find a few good ones but also be friends with everyone. Don't get a job, it distracts from your studies and social life, but make sure you get a job, it teaches responsibility and you'll earn money that you will need. Get involved at school and participate in all of the extracurriculars that you can, and don't overbook yourself, and make sure you show up to every opportunity and are involved in everything but not everything. Remember that it's so important to eat dinner as a family but also school team practice ends at 6 and AAU starts at 6:15 and don't be late but take time to eat dinner with the family but don’t be late. Don't take anything too seriously, there's plenty of time for that later, but make sure you take it very seriously. Enjoy learning about everything, don't worry about finding your career path yet, and make sure you decide early exactly what you want to do with your life so that you can take the right classes and get on the right career path. Don't bother with honor societies; they're not very important but they're very important so make sure you participate. Get plenty of sleep, it's important at your age but also make sure you get time in the gym and be early to the game and do all of your homework and read extra pages to get ahead and spend time with your friends and eat full meals and be at the bus stop before sunrise and put in your all at work and be home for dinner with your family and stay up late to study and go to sleep early. Don't worry about standardized tests, they don't mean anything but they mean everything so take a study course but don't bother taking a study course it doesn't help and helps a lot. Your physical and mental health is most important but never miss practice (even the optional ones) and don't let your grades dip below an A no matter what. Try everything, it's ok to fail but also never fail because that will follow you everywhere forever but try everything and don't worry about failure. Overall, relax, it's not that big of a deal but it's a very big deal and you will always have time for that later but you'll never have time for that later.