I've always looked at my friends and thought "Hey... I wish I were 15 or 16 or 17 or 22..."
Kind of like when I was thirteen or fourteen and some of my friends were fifteen. I thought "Whoa, I wish I were 15..." but now I am 15, and everybody's like 'been there done that' and it's not cool no more.
It's always looking forward to the next thing; never appriciating the present.
It's like a trend, only it's impossible for me to stay in fasion.