It's all about the journey. When you come right down to it... it's all there is. It's also been written that the "end justifies the means," pretty much a different way of saying the same thing. In fact the means is the end... how you behave during the journey is what will inevitably determine the outcome!
Well the whole killing yourself in the process of achieving a goal is what can be so troublesome. If we sacrifice so much just for some perceived outcome, my experience is it is almost never worth it.
Not to mention the probability of achieving the goal is never assured... Therefore, I reiterate- just sit back and enjoy the ride, because ultimately, the ride is all there is!