I have suffered on and off with panic attacks and negative thoughts for over 20 years (I'm only 30) and had recently started with panic attacks after a break from them for 6 years. I had read 'You Can Be Happy No Matter What' by Richard Carlson (see my over review) which helped a great deal and started me thinking about other ways to adapt my thinking. I had heard about CBT before and heard Paul McKenna mention it in some of his books.
I had used the 'Dummies' series of books before and enjoyed reading them. The style of writing is extremely easy to read, you can simply pop in and out of the book to re-read certain sections as it is all categorised, and the two writers use humour which helps a great deal when dealing with this subject. I recently had a slight re-lapse when on holiday and had a panic attack. However due to the way the book is written I easily found a part I needed to re-read and was feeling 100% again within minutes
If you are suffering from negative thoughts, depression, panic attacks, phobias etc. then this book is for you and WILL help. After reading only a small section I was feeling much better and thinking "hmmm, now I understand!"