You do what you are
In the 2001 movie Along came a spider, there is an interesting quote by Morgan Freeman where he says "You do what you are" and then he further goes on to explain "I mean, you do what you are. You're born with a gift. If not that, then you get good at something along the way. And what you're good at, you don't take for granted. You don't betray it."
Ive always wondered while watching the numerous talent shows, how the hell do they do what they do or sometimes you see someone do something at work and they are just so amazing at it. Corelating this to what Morgan Freeman quoted in the movie, they are just born with that talent to do it or it is through sheer hard work that they learned to do it. I believe that you would put in the hard work only in two circumstances, one if you are in a perilous situation and you have to learn to do it you don't have much of a choice or you love what you are doing and want to become the very best at it.
Finding out what you love doing and doing more and more of it until you are the very best is important to find value in what you do and thus giving meaning to life or as Morgan Freeman puts it if you don't "you will betray yourself. Its a sad thing.".