Cara
I'm not sure if I should comment here at this time or wait a bit, there is the chance you will decide to leave if this is all there is. If I was your therapist I would wait a few weeks to be sure you have this key properly accepted. It is the key for sure but it can also be the key to get started. This key opens other doors. But it doesn't have to because you will more than likely get better and better. Especially if you are willing to accept just managing it. In truth you will always be managing it but with CBT it will become subconscious. In fact like accepting you will always have it just happened.
So treat the acceptance as a positive and never let it become a negative because and this is just my opinion and I'm usually right. I say this because I think you will continue to improve. It only takes determination now not to let it get you down.
Your psychiatrist isn't wrong, you will have to manage it but it will be easier if you accept you need every coping skill and relaxation technique you can think of. I use coping skills and don't even notice I do this so my day appears normal. Normal people ( I don't like that name but there really isn't another) do this too without knowing they are because they don't know what it is. There are a lot of people with anxious moments without knowing they are having them. You can spot them in a crowd if you look. There are lots. One in ten is supposed to be the average but I think there are more. Many more. Looking for them can give you the assurance that you are not alone, you just have more awareness of it.
So if you do leave, and I hope you won't, please come back and let us know how you are doing because I for one care.
Davit
One last comment, anxiety is not a disease, it is a condition. a disease is an actual chemical change. A condition can happen from a deficiency but even at that the deficiency is the disease if it can't be reversed. The condition most definitely can. I'm proof of that.