It took me 18 years or so to get to a therapist. One of the best things that I have ever done for myself and my family. I wish that I had done it long before that. You are doing a good thing.
Hang in there. It is not easy to purge the mindset that was instilled. Fear and anxiety was the tool that was used to shape us into the follower that we were. Escaping is all about that battle. It is an escape.
Therapy worked great for me. I still battle with anxiety. I have arrived at an herbal mixture that works well for me in harsher times and my therapist said the choices were good alternatives if they seemed to take the edge off my extreme moments.
The meds are cool just make sure you follow the Doc's instructions.
Do your own research not just on the witnesses but definitely dive into the bible itself and be the Berean. Use different translations. Research what others believe not to adopt the beliefs but to understand how you have been taught how to percieve and what the reality of that actually is.
You are not alone. Many are with you.