1. If you discover (after a month!) that your only friend in kickboxing class studies in class 8 (quick math: 5 + 8 = 13yrs = newly formed teenager) Just deal with it.
2. Its okay to be shocked if your social life includes vegetarians and people born in the 90s.
3. Your friends will constantly talk about quitting their jobs and planning a trip somewhere. You! Be smart. Don't quit the job (unless you have finished one year) But go travel! TRAVEL! wherever you can!
(on a more serious note)
4. Its very important to fight with your friends. It gives you unnecessary drama but keeps you sane.
5.When you try really hard to have fun. You actually do.
6.And you're not going through quarter life crisis guys. Do the math.
(I'm sure there are more insights about/at this age. They will come to me. After all I have a year to go!)