Hi there! You are not alone. I too do this. Drives me demented. I wonder why we like to torture ourselves, thinking all sorts of negative things that they could be thinking.

What I do is keep myself super busy, so I don't have time to think. I also, listen to music and watch TV or a DVD. These things won't take the worry away, not all of it. But at least, if we are busy, we cannot think much about it.