Ten Things I didn't believe or didn't know at 21 but ring true at 31

Dear 21 year old Sue, Congrats after all those years of fake and chalked ids, after a semester in England where you kept expecting to get carded for being under 21 and never did you are finally legal! Here's a note from your 31 year old self you have no idea what is in store.
10. You will be just as excited to show the bouncer your id when you turn 31 as you felt on the night you turned 21.
9. Yes, your energy will not last forever. You will get tired so live it up dance all night while you still can! You will understand why your parents fell asleep and rarely made it through the 10 o'clock news
8. That guy you are crying over today really isn't worth your tears nor will you remember why he made you cry
7. People will still struggle in 2013 to find a name for those years from 2000 on.
6. Dancing never gets old. It just gets earlier, in your own club called "Mi Casa", and the dress code is very strict pajamas and no shoes.
5. Each year really will go by quicker and quicker. Some of your most happiest moments will be mixed with the saddest/most challenging ones. The game of life you once played will become scarily real as you car fills up with more people pegs and careers
4. The growth of technology may be what will define your generation; hey it could have been disco, poodle skirts, equality, drugs, rock and roll But no it's the number of friend requests you have and the dating texting games instead
3.Your 20's will go by in the blink on an eye. And NO being in your 30's is NOT old!
2.You will wonder how your parents ever managed to be parents to more than 1 kid at a younger age than yourself and without apps, texting, and the internet!
1. What doesn't kill you really will make you stronger. Not everyone you will be good but the ones that are will make it all worth it.