Turn into Twenty One..oh, I'm a Young Lady

I've found that time is the most expensive thing we can't buy, but at the same time we can share it each other. It's not given by one, but God. 
When birthday's coming, remind me the time I've been here, and with this precious thing, what I've done?
"I just keep on trying to find a way of becoming what I would so like to be, and what I could be..."
-Happy Birthday to me :)
Novia