What do you have to lose by going after what you want? Sure it's hard at first, and sometimes scary, but if you really want it, what's holding you back? Excuses. When I'm scared to do something because the result might not be what I want, I make excuses for why I shouldn't do it. But, in the end, I am just fooling myself, hurting myself. I always regret not going after it, I always wonder what could have been, and there's no way to go back and do it again. There is no way to determine which path is better, you just have to go with your heart.
It kind of goes back to the Philosophy class I took last semester. What constitutes living a good and fulfilling life? In order to truly be satisfied you can't have regrets and you can't let opportunities pass you by.
Carpe diem -- seize the day.

