Three grand essentials to life are...something to do
I think that the idea of a "cure" is misleading. There are a variety of practices that are helpful to anxiety sufferers, but everyone responds differently to them. No one things seems to work for everyone, so when I see a new book come out that claims to have THE answer, I get a little frustrated, because knowing how the anxious mind works, I imagine someone picking up that book and the techniques not working for them and then them feel discouraged and hopeless.
I do think that anxiety can go into remission, as mine has done in the past, but I don't necessarily believe there is a definite "cure".