Interesting question, and one that I used to grapple with quite a lot.
I used to say that IF the symptoms went away, I would be better! I would stop worrying, as it was the symptoms constantly manifesting that made me feel crazy, cursed, like a failure at life.........it led me to hating my body, as if my body was this separate entity that existed only to frighten me, bully me, punish me.
After therapy I came to realize that it is how i RESPOND to the symptoms that makes or breaks the anxiety pattern.
I had to learn that my responses/reactions to the pains, lumps and scary sensations were what was making my life a living hell.
So then I wanted to ask "But surely this isn't normal? Surely normal people don't get this many ailments and symptoms, right?"
But the answer is yes, they might, but their responses are entirely different to mine.
For example, I once had a massive panic reaction to a rash on my leg during a therapy session. I asked the therapist what she would think if she found a similar rash on her leg. And she just shrugged and said "I dunno, I'd probably thing something had irritated it"
And I was in awe, for I saw meningitis, fatal viruses, blood poisoning........etc.
How we differed!
So over time, if our responses improve, and we learn from previous mistakes, our attention would be less focused upon the symptoms, if that makes sense? So that they would be somewhat normalized, forgettable, just a bit of nothing.
I do think that focus and the attention we give to our bodies is the crucial thing.
So imagine if your symptoms go away, of course you'd feel happy, we all would! But the truth is, the anxiety itself would just go underground, possibly fix itself to some other life issue, until the next symptom popped up..........
A great thing someone once asked me when i was freaking out about auto immune diseases was "How many times have you thought you've been suffering from a terrible disease in the past 5 years?"
I said "hundreds, why?"
And she said "And how many times were your suspicions correct?"
Food for thought.