brain surgery

"i know Tay, it's just SO hard to commit to something that is gunna stick with you FOREVER when you're 16." lately, this has been playing such a toll on my everyday thought. I mean, a year ago I wanted to be the next Cristina Yang and had the rest of my life figured out. then I woke up one morning and decided that wasn't what I wanted to do for the rest of my life. so where do I go from here? how am I supposed to make a decision like that when my teenage mind is so screwed up and insane? answers anybody?