I sometimes "practice" using the stuff on TV that makes me anxious. It is all our imagination going wild and we can learn to control that, that's 100% "Me" not whatever is being talked about/happening in the scene.

I have the bad habit of changing the channel when I get scared or, if for some reason :-) I don't control the clicker, I jump up and go to the kitchen or something, end up in the refrigerator (where I don't need to be :-) So, sometimes I try to disallow such behaviors and make myself watch. If I get to thinking about something I've seen as I'm going to sleep and the anxiety keeps me awake, I practice bringing my thoughts back to something else I "want" to think about instead.