You're seeking your rightful path in life, and your friend will really want to help you find it -- by advising you, challenging you and pushing you to be more like them. They'll want you to pursue the goals they've set for themselves, and they'll have a hard time relating to your goals as meaningful for you. You need to do what's right for you, but when your buddy starts acting like an authority figure, things could get tricky.
Their advice won't hit home for you, and the way they'll try to force it on you, acting as if you're messing up if you don't follow their example, will really get on your nerves. Of course, it's possible that all of this will have a positive outcome -- if they push you so hard that you're forced to claim your own, true direction in life, regardless of what they have to say about it.