Beware of Senioritis, a state of mind afflicting a second semester senior in which they are unable to care about any assignments and most classes. It will happen, but try as hard as you can to put it off. On the whole freshman thing, you could instead adopt a freshman and try to be a little mentor to them. It's fun and inspires a little bit of hope in the freshman adopted that senpai might notice them someday. Have fun! It was my best year by far, but don't have fun too early. Hopefully get into a good college first, then have lots of fun (but still not too much).