This Think Thingy

Sometimes I think I think too much.
I think that what I'm thinking has a lot to do with thinking too much.
But I think the things I'm thinking about are things I should think about. (Well, not all. I think.)
Some think that thinking too much might lead to the unthinkable.
But I think you think I've got something to ask you about thinking.
Have you ever thought of thinking what it is you're thinking?