Its hard to describe all of it, but one of the central themes is the self image. What you achieve and do comes down to the way you fundamentally are. For example, someone who sees themselves as overweight will struggle to lose weight because their behaviors will always revert back to being consistent with the way they see themselves. If you are told at school that you are bad at a certain subject, you may always be bad at it, even though you really arent. Its just that your self image is set that way.
So to be successful, going to ra-ra seminars wont help you. You'll come home and for a couple of days you'll feel good, but unless you change your self image itself, a few days later the good feeling will wear off and your behaviors will again be consistent with your self-image.
Thanks for the recommendation Tubs. Joined up to Audible myself and have just started this book - about an hour into it, and so far makes a lot of sense.
Are there any other self improvement books etc. you would recommend? I've decided to start listening to them in my car on the way to and from work each day (this book is a monster at 11hrs!). Audible seems to be the cheapest with their monthly subscription option.