Giving out of Nothing

I know what your thinking, how can you give out of nothing? How can you give if you have nothing?
I am a musician, I play fiddle, piano and anything else I can get my hands on. I also sing with my siblings. With this talent comes an expectation to perform and/Or leas the worship. I love doing what I do, but today I don't have it. What is 'it'? Jesus. I don't have His touch today. And so that brings me to the question, how can you give when there is nothing in you to give? I must simply trust that God has a mighty hand and a greater plan. But to do that, I must have faith and trust in Him to do that. And to have that I must have a personal walk with Him. Of which I do not have.
So, what do you do, when you are playing the part of a good, Christian girl, and yet you don't have the power of God active in your life? That's a really good question. And truthfully, I don't have the answer for it.
So when told about the nursing home ministry today, I said I had to work. I did, but the rain came and I didn't. Instead of making it in time and none of them knowing the truth, I sit here, watching the plants, and pondering the truth of the matter. I don't have a personal walk with Jesus, and I have nothing to give.