What drives you to do what you want to do? Is it purpose? Is it praise? Is it the desire to succeed - however that might be defined for you? Is it just for fun? What is the motivating force behind what you do?
I write. I can say I've been doing it since I was a child because that's true. It definitely serves a purpose in my life, and I need purpose.
When you do what you're supposed to do, all of the above items might apply.
As a Christian, my/our foremost pursuit is obedience to the Lord's direction(s). Although that pursuit will usually involve some hardship(s) along the journey, ultimately the outcome of those endeavors will be the most satisfying and feel the most complete.
What's driving you? Or who?
Father, thank you for directing me to write for you. It is the most satisfying thing that I do. Please allow the stories you give me to make an impact wherever you choose. Apart from you, I can do nothing. In the Name of Jesus, Amen.