31. If things come easy to you and you can pass all your classes in high school on tests alone, don’t. Do the homework, even if it’s just tedious busywork. Keep all your handouts organized and neat. Do projects and papers step by step. Once you hit college (especially in upper level stem classes) you’ll regret not having made those habits earlier. High school isn’t about learning material as much as it is teaching you HOW to learn material.
32. For the love of everything that is good, don’t ever take up smoking. Doesn’t matter how good that nicotine rush feels, sooner or later you’ll end up regretting it, and quitting is… well, a bitch.