Honestly, man, I barely remember high school. I was class of '99, am now 41, so the 36 months I spent in high school currently represent about 7% of my life and

Honestly, man, I barely remember high school. I was class of '99, am now 41, so the 36 months I spent in high school currently represent about 7% of my life and that number keeps getting smaller. I guess they're impactful years because of puberty and the experiencing of a lot of "firsts," but even so, it's hard to imagine at this point that doing things differently would have put me in much of a different place right now. Don't make any gigantic mistakes. Don't get put in prison. Avoid injuries you can't heal from. Don't have any kids. Don't completely scuttle the relationships you have with your family. I think the exception is if you're some kind of elite athlete. You don't get much of a chance to make up for key formative years in which you need to be training if you want any realistic shot at the pros and certainly a scholarship to a D1 school if it's a sport in the NCAA. Other than that, academically, getting into an Ivy only matters if you're trying to be an MBA or get into finance, and whatever else you might do in terms of honors and AP classes at best saves you a year of college in what's likely to be a 90 year life. College itself matters a lot more. Don't pick a useless major unless your parents are rich and you're going to get a great job no matter what. Don't saddle yourself with a bunch of debt. Still don't get arrested and don't have kids until you're graduated and have a job in a more or less "permanent" city you're gonna stay in. College is when my regrets started, but even there, the crappy and stupid things I did were easily overcome by the time my 20s were over.