"The Heart of the Artist" by Rory Noland.
I've never felt adequate or qualified to run the music ministry at my church, and I'm not! When the last piano player moved away, I was the only musician left, so I took the reins. BUT...God helped me to see that He didn't care if I had a degree in music ministry or any experience at all for that matter. He opened my eyes to see that all I needed was Him; all I needed was to trust my God and He would take care of the rest.