What is a life worth living?

I've been pondering this question, since someone asked me it yesterday morning...What is a life worth living? A life lived for Christ and one that brings him honor and glory, yes, most definitely, but what does that actually look like? And what else? What do I really want in this life?
Whenever anyone asks me some variation of this question, I always (if I know the person well enough) say that there are really only three things I want...to be a doctor, to get married, and to have children...things that sometimes (often) seem so out of reach. Anything else that when I was younger I might have wanted I now either have or it is no longer important...I own a house (condo), which was one of my goals when I was a senior in college (although that seems relatively unimportant now in the grand sceme of things), I attend an amazing, Biblically-sound church (which is very important), and I have a number of close, Christian friends (yes, still important). But I guess other things just seem more...lifelong, ya know? Oh yeah, and I have an absolutely amazing family, but I guess I've always kind of taken that for granted, since I grew up with that.
I guess what I should really focus on is a closer relationship with Christ, because nothing else besides Him can truly satisfy...and He will show me how the other pieces of my life should fit into place...