I stole this from Oprah

I have thought about this topic a lot and I think it's put really well in the following quote pulled from Oprah's website. She has a newsletter based on the book 'A Course in Miracles'.

Whatever your talent or abilities, He can use them. Our ministry becomes a joyous experience for ourselves and others as we let a mysterious force direct us. We simply follow instructions. We are allowing God's spirit to move through us, using our gifts and resources however He sees fit, to do His work in the world. This is the key to a successful career.

—Excerpted from A Return to Love: Reflections on the Principles of A Course in Miracles