I started this decade out as a 15-year-old kid, and now I'm a 25-year-old adult. I've gained 20 pounds and about 30 gray hairs. I've grown one bra size and two dress sizes. I've gained an unquantifiable amount of self-esteem.

I've lived in five cities, in twelve houses, and had 24 roommates. I've had nine paying jobs and three non-paying ones. I've written for free for seven publications, and been paid to write for two. I've had three cars, four bikes, and six pairs of running shoes. I've had seven cell phones, four iPods, five blogs, and eight email addresses. I've been in three car accidents, gotten one speeding ticket, and accumulated 16 parking tickets (Los Angeles).

I've flown out of the country four times, and flown across it 32 times. I've learned one language.

I've had seven therapists and seven boyfriends (correlation, not causation.) I've lost two grandparents and gained one sister-in-law. I've held steady with one dog.

I've eaten one turkey sandwich and one bite of steak.

I started the decade living with my parents, and though I'm 3000 miles from them now, I still talk to them almost everyday. My relationship with my little brother has gone from close-quartered mutual exasperation to surprising friendship.

I've had five core social groups, and nine best friends.

My favorite music has changed from Dave Mathews Band to Joanna Newsom, and my favorite TV show is no longer Sex and the City, but either It's Always Sunny in Philadelphia, My So-Called Life, or Mad Men. My favorite book is still To Kill a Mockingbird; my favorite movie, Good Will Hunting; and my favorite holiday movie, Holiday Inn. My favorite drink has evolved from V8 Juice to a good (or bad) Bloody Mary. I still eat pasta with marinara sauce if I have had a bad day.

My main life goal has evolved from "getting into a good college" to "finding a way to make money and also be happy." I can put a checkmark next to both of them.

I've spent two New Years Eve's with my family, five at house parties with old high school friends, one at a loft party, and one alone in San Diego, moving out of a cold house with a rodent problem. I'll spend the start of this next decade at my childhood home in Virginia, hopefully on a couch next to a fire with my parents and my dog, but I wouldn't want to speculate about the future.

Logan Sachon is keeping track.