Hi, I'm just wondering if anyone can recommend any good authors of CBT or other anxiety therapies to cope with waiting for medical test results?

I'm not waiting for them, a friend is, but I'm full of anxiety.

I keep telling myself to look at it a different way, that instead of it being a negative for having to be tested, it's a positive that if anything is wrong it will
be addressed.

But finding it hard. Friend been asked back after lung CT. Wasn't asked back immediately, but wasn't discharged back to GP either. Anyone any
experience of all this?