I bought the Linden Method. Am undecided on its efficacy. His approach to ridding yourself of anxiety is basically about focusing outwards, trying as hard as you can not to obsess and to throw yourself into life. He also teaches you how to relax and a bit of self hypnosis is thrown in for good measure. All good advice.
My major problem with is it is that he suggests you take whatever it is that caused you to become anxious, place it as far into the back of your mind as possible and bury under rocks. Well, for me, getting out what was underneath the rocks is slowly taking away my dp. My anxiety came after dp too, though I'm not sure whether that makes a whole lot of difference, since it is all linked anyway.
It is common sense advice for anxiety symptoms, regardless of you may experience them, before or after dp. Though it is a superficial remedy, as I am dubious that anyone with any deeper seated problems would be able to keep this up for any length of time without experiencing relapses.
Everybody is different. I needed more than the Linden Method. I moved on to reading more about psychology, despite its explicit instructions to not do so. I needed to understand how it all works, but this is not always helpful to everyone. In particular, I needed to find out how I worked, which I would not be achieving if I followed only The Linden Method. Charles Linden is British, but The Linden Method has definitely been 'americanised' on its website, no offence meant by that! We're just stiff upper-lip over here, ya?
Seriously, his advice is similar to Janine's focusing outwards so save yourself the dosh and take her advice. Her book was much more satisfying. (I'm expecting commission Janine, for any subsequent rise in sales...)