I've looked at the Linden Method - someone sent it to me. It is extremely expensive! The Panic Program offered on this website is free and teaches Cognitive Behavior Therapy. In comparison, and in my own experience, the Cognitive Behavior Therapy is so much more helpful! I'm using it and for the first time in 12 years actually have days with no panic. And I am feeling more in control than I have in a seriously long time!! I still have some panicky days but not as often and when I do have them, they're nowhere near the same intensity because I know what it is now and I know that I am in control of it - it is not in control of me.
If you haven't tried the Panic Program yet, save yourself a few hundred dollars and use it before you try the Linden Method. Like I said, it is free and quite frankly, it is tons more helpful.
