I hope you don't mind me sticking my nose in.
If your Doctor had of given you pills for your heart instead and told you to walk for 15 minutes a day. To raise your blood pressure up to 150/90 and pulse to 110 while you did it you would feel better, because you would first off see there was nothing wrong with your heart, second it would get more oxygen to your brain. And third it wouldn't matter id all the pill was is sugar or a very mild beta blocker like propranolol that has some anti anxiety effect.
What would be happening is conditioning the brain to believe what you want and because this would be new and different it would work. In fact you would soon get tired of the routine and convince yourself there is nothing wrong.
And this is CBT.
On the other hand the pills he gave you are not meant to cure you. They are meant to calm you so you can do the work yourself. That is all. They have not come up with a delete pill that will clear memory so you can start over. The best the pills will do is allow you to store memories in a dead file. They are still there, you just don't go there.
When you first start the pills your mind will fight being controlled and you will usually get worse. This is common for two weeks. At six weeks they hit max effectiveness and have to be revalued. If at this point they are working then you will not go to the unwanted thoughts. Problem is you might have difficulty going to thoughts you want. You might have difficulty concentrating. You might have trouble with eye hand coordination.
The problem is that the thoughts are still in the dead file where they are still accessible instead of on the back page of an active file where they are less so.
A lot of CBT goes against common thought.
Take your heart thoughts. You know it is okay, but you also think it is not. The difference is it is okay because you were told so where as you think it isn't because you think it isn't. You have to think it is okay and believe it and you have to have a reason too. As CBT goes the placebo for your heart would have done this. But that is not what you are doing so try something similar. Use the pills you are on for their calming effect and do CBT.
What can YOU do to convince you there is nothing wrong with your heart. Not Nurses Docs Or Lab Techs but YOU.
Because it is you that has to know this not them. This is what they mean by changing negative to positive.
Okay, but it isn't really changing any thing what it is, is looking at it and burying it with the thought that it is wrong. It is still there but has no power now because you have buried it.
Where as if you fight it or ignore it it is not going to ignore you.
Davit