I have such a better understands of 2 Corinthians 12:9 – 10.

7To keep me from becoming conceited because of these surpassingly great revelations, there was given me a thorn in my flesh, a messenger of Satan, to torment me. 8Three times I pleaded with the Lord to take it away from me. 9But 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. 10That is why, for Christ’s sake, I delight in weaknesses, in insults, in hardships, in persecutions, in difficulties. For when I am weak, then I am strong.

I have heard so many theory’s on Paul’s thorn. It has been theorized as a kidney stone, depression, ulcer, and an actual demon. As Lucy Van Pelt told Schroder, It’s a good theory no one can prove it wrong!” Let me add a guess to the list, maybe Paul had a Gastric Bypass!
My weakness is ever present so I need to focus more on Christ’s power resting on me!
I am learning to let God work through me. Take this week for instance. Somehow I made it to Cedar Point Kid’s Club feeling puny as could be. But God, all God none me, managed to lead singing and teach the lesson at Kid’s Club then meet some Southeastern Students working with the Bhutanese and form a partnership! Then Tuesday I crawled, ok that’s a bit of an exaggeration, but feeling as bad as I did I watched as God pulled off a great Youth Nite.
So what I am trying to say here? That even though I am sick and weak God is still working. He doesn’t need my health or my strength. After all these years it comes back to what Mike Barnhouse use to tell me. The only ability you have that God needs is AVAILABILITY!