(((Black Wolf))),

When people have PTSD, they have a very hard time balancing the cortizol levels in their brains. And the reason the brain trys to isolate and avoid is to protect. However at the same time it is very sensitive to any reminders of "trama".
The reason to investigate "medications" is to find a way to help your brain by providing it with more control over the "cortizol" so the delicate parts of our brain doesn't get harmed. They have learned a lot about PTSD now and have been developing medications to help a patient control the anxiety as well as help restore the areas that have suffered. So, it isn't just all about thinking. However it is important that you get asisitance to help you learn ways to consciously "lower" your anxiety. This "can" happen, you "can" learn to help yourself instead of just being frightened by it and unknowingly feeding into it.

What you are feeling is "normal" to those that struggle with PTSD. It is "not your fault" and "it is a real challenge" and "you will need lots of time to slowly heal".
Never be hard on yourself if you struggle, you need time and guidance to help you heal.

(((Hugs)))