It seems that often prayers are little more than worrying out loud, especially when we have to tell God all the gory details or setbacks of the situation, ie. "Aunt Bertha has the gout, Lord, and is in terrible pain (as if He didn't know). Please heal her because she can't make it out to church and she has to have her kids take her to Bingo on Tuesdays and I don't know if she will make it to Sammy's open house or to the progressive dinner and she must get so lonely..."
If our prayers are our way of worrying it's no wonder that we keep taking our concerns back into our own hands and keep worrying about them.
Worriers seem to like worrying.