The classic pattern of an anxiety attack is one of a feedback loop. The method for breaking it is to keep trying to replace the unwanted input. It will not work all of the time but the more you try the less you will repeat the same input material. So when you get an urge to watch a theological film watch something else even if you are frantically itching to watch it. Even if your mind is desperately trying to bend the topic of what you are watching to a theological theme just accept it and carry on watching the other thing regardless. It will be difficult, it will frustrate you but if you keep doing it the pattern of inputting the output of your input will break. Even then you will have recurring anxiety but by then you will be stronger. Keep at it and keep away from the theological videos as much as possible. I really had to fight the urge to pick up a plastic bottle in the other side of a busy road today. I used to get into quite a state about picking up litter. Now I limit myself to what is at my feet and not darting from street to street in all weathers trying to pick it all up.