Excuses.

Alot of times, I don't try to do certain things because I'm in college.  No, I can't consider starting that band yet, there's no time, or point, I'm in college and nothing will come of this music thing.
Drake was in school I think before he made it big.  I've heard a line in his song about dorms and school.  He was doing that other stuff while studying or whatever.  Asher Roth was also in college, except i think he graduated.  Kid Cudi is young too, don't know if he's hitting those books. 
I don't think Wayne ever made it into higher education; he sure is high though. 
I think I have too much on my plate with writing love letters to my boyfriend and keeping up with my photography assignments. 
Can I even consider a global empire of some sort at this age?  Apparently some people can. 
I think it really comes down to doing what you want to do and not underestimating your ability. 
I want to read books and write letters and remember how to put emotion into my voice.  Lately, there is only tension where there used to be something more.  I want to learn how to appreciate the feelings I have and document them adequately again.  Now, more than ever am I in a position to express myself and I feel like there are limits to my sensation.  It's time to cut inhibitions and release my inner self.  That takes a certain level of trust in those you're expressing yourself to, be it your photography class critiquing your piece, your leadership class taking your idea into consideration or your boyfriend reading the letter you poured your soul into. 
Also, take risks when deciding what to pursue in the way of hobbys  I think.  You never know what may strike your fancy.