But he said to me, “My grace is sufficient for  you, for my power is made perfect in weakness.” Therefore I will boast all the more gladly about my weaknesses, so that Christ’s power may rest on me.
 
I read this in my devotion early and I can’t think of anything more encouraging. I have been struggling with feeling unworthy of a call to ministry because I am so aware of my weaknesses and I don’t want to let God down. But the more aware everyone is of our weaknesses the more God will be revealed in our success. His grace is all we need!!