I just read Total Money Makeover and we are committed to doing it (Baby Step #1 is done, now we're on the hard one...).
I'll agree with others that it's not anything earth shattering - like some big secret - but he has a way of presenting the information to get you moving. It helped me see some hope and light at the end of our (long) tunnel instead of just feeling hopeless about ever being debt-free.
I also found it helpful to have someone else lay out a step by step plan. Sometimes I found myself getting overwhelmed about where I should put my money, but the book made me starting thinking about a plan and what would work best for my family.
We are nowhere near "gazelle" intense, but we have our moments and we are definitely moving in the right direction. I'd recommend at least reading this book - it is a quick, easy read and then you can decide if you agree with all, some, or none of his advice.
Good luck!