Argh, I'm approaching that age myself. At least you're not in a dead-end minimum wage job, living in your parents basement and driving a death-trap 20 miles to and from work every day. Cause it would suck to be in that position at 30.
30? Is that all? Hell, it's not like you're OLD or anything yet :) Think young, live young, BE young - you have lots of time left before you get old. I'll hit 30 next year and there are times when I still act like I'm 13 :P