I listen to hours and hours of CDs, from people like Michael, Tony Robbins, Stephen Covey, Wayne Dyer etc. I NEVER do the follow-up actions (I tell myself that this is because I only listen in the car and I can't stop and write stuff down when in the car)
You know, I think it also has to do with which of the authors "speaks your language". I listened to Anthony Robbins a lot and was totally enthusiastic while I was listening, but never did the excercises. I read Paul McKenna's Change your life in 7 days and found it great while I read it, but never stopped to do the exercises. I just kept turning to the next page. And then I read Michael's first book and found I did stop to do the excercises, so I stuck with him. The books are all about the same things, more or less, but you have to find the ones that you resonate with.
On the other hand, I could imagine it has to do with the fact your listening to them while you drive. First of all you are distracted because your focus is on the road, plus, as you said, you can't stop to write the important things down.
If think that PMcK's approach to dieting makes the most sense to me, yet I can't get myself to consistently follow that principle.
If that's true I bet you didn't listen to the CD that came with his book! (Probably because it's not really the kind of CD you can listen to in the car
) That's the reason why I liked it so much - you don't NEED to have the willpower or discipline to follow it - if you listen to the trance/hypnosis thingy on the CD for a while, it's in your subconscious and he's done all the work for you! I put the track on my ipod and listened to it when I went to bed and in the train to work in the morning for a couple of days, and out of the blue I lost 3 kilos. I did not pay attention, I did not stop eating chocolate - I did absolutely nothing to "try and lose weight". The only thing I consciously did, was to make sure I get something to eat immediately, the minute I felt hungry. With a full time job, sometimes you don't pay attention to your stomach, so that's the only thing that I "changed". What I notice, though, is that I eat much more salad and greens. I just feel like it sometimes - that never happened before, so this I totally credit to the brainwashing CD
I'm sure if you try it out and just make it your goal to listen to the cd for a couple of days, you will see results!
For the rest, I agree with the others. Focus and making notes.